| County | Department | ALPR Usage | Retention Period | Vendor(s) |
|---|---|---|---|---|
| Alameda County | Alameda County Sheriff | Uses ALPR | Between 6 months and 1 year | Vigilant Solutions |
| Alameda County | Alameda Police Department | Uses ALPR | 6 months or Less | Vigilant Solutions |
| Alameda County | Albany Police Department | Does Not Use ALPR | ||
| Alameda County | Berkeley Police Department | Uses ALPR | 6 months or Less | Genetec AutoVu |
| Alameda County | Emeryville Police Department | Uses ALPR | Between 1 and 2 years | Vigilant Solutions |
| Alameda County | Fremont Police Department | Uses ALPR | Between 6 months and 1 year | Neology, Inc. or PIPS Technology, Other |
| Alameda County | Hayward Police Department | Uses ALPR | 6 months or Less | Vigilant Solutions, Other |
| Alameda County | Livermore Police Department | Uses ALPR | 6 months or Less | Vigilant Solutions |
| Alameda County | Newark Police Department | Uses ALPR | Between 6 months and 1 year | Neology, Inc. or PIPS Technology |
| Alameda County | Oakland Police Department | Uses ALPR | Between 1 and 2 years | Neology, Inc. or PIPS Technology |
| Alameda County | Piedmont Police Department | Uses ALPR | Between 6 months and 1 year | Neology, Inc. or PIPS Technology |
| Alameda County | Pleasanton Police Department | Uses ALPR | 6 months or Less | Vigilant Solutions |
| Alameda County | San Leandro Police Department | Uses ALPR | Less than 1 day | Neology, Inc. or PIPS Technology |
| Alameda County | Union City Police Department | Uses ALPR | Between 1 and 2 years | Vigilant Solutions |
| Alpine County | Alpine County Sheriff | Does Not Use ALPR | ||
| Amador County | Amador County Sheriff | Does Not Use ALPR | ||
| Amador County | Ione Police Department | Does Not Use ALPR | ||
| Amador County | Jackson Police Department | Does Not Use ALPR | ||
| Amador County | Sutter Creek Police Department | Does Not Use ALPR | ||
| Butte County | Butte County Sheriff | Does Not Use ALPR | ||
| Butte County | Chico Police Department | Uses ALPR | Between 2 and 5 years | Other |
| Butte County | Gridley-Biggs Police Department | Does Not Use ALPR | ||
| Butte County | Oroville Police Department | Does Not Use ALPR | ||
| Butte County | Paradise Police Department | Planning to Use ALPR | ||
| Calaveras County | Angels Camp Police Department | Does Not Use ALPR | ||
| Calaveras County | Calaveras County Sheriff | Does Not Use ALPR | ||
| Colusa County | Colusa County Sheriff | Does Not Use ALPR | ||
| Colusa County | Colusa Police Department | Does Not Use ALPR | ||
| Colusa County | Williams Police Department | Planning to Use ALPR | ||
| Contra Costa County | Antioch Police Department | Uses ALPR | Between 2 and 5 years | Vigilant Solutions |
| Contra Costa County | Brentwood Police Department | Uses ALPR | Between 6 months and 1 year | Vigilant Solutions |
| Contra Costa County | Clayton Police Department | Uses ALPR | Between 2 and 5 years | Vigilant Solutions |
| Contra Costa County | Concord Police Department | Uses ALPR | 6 months or Less | Neology, Inc. or PIPS Technology |
| Contra Costa County | Contra Costa County Sheriff | Uses ALPR | Between 6 months and 1 year | Vigilant Solutions |
| Contra Costa County | El Cerrito Police Department | Uses ALPR | Less than 1 day | Neology, Inc. or PIPS Technology, Other |
| Contra Costa County | Hercules Police Department | Uses ALPR | Less than 1 day | Vigilant Solutions |
| Contra Costa County | Kensington Police Department | Does Not Use ALPR | ||
| Contra Costa County | Martinez Police Department | Uses ALPR | Between 1 and 2 years | Vigilant Solutions |
| Contra Costa County | Moraga Police Department | Uses ALPR | Between 6 months and 1 year | Other |
| Contra Costa County | Oakley Police Department | Uses ALPR | Between 6 months and 1 year | Vigilant Solutions |
| Contra Costa County | Pinole Police Department | Uses ALPR | Less than 1 day | Other |
| Contra Costa County | Pittsburg Police Department | Uses ALPR | Between 2 and 5 years | Vigilant Solutions |
| Contra Costa County | Pleasant Hill Police Department | Uses ALPR | Between 1 and 2 years | Vigilant Solutions |
| Contra Costa County | Richmond Police Department | Planning to Use ALPR | ||
| Contra Costa County | San Pablo Police Department | Uses ALPR | Between 6 months and 1 year | Vigilant Solutions |
| Contra Costa County | San Ramon Police Department | Uses ALPR | Between 1 and 2 years | Vigilant Solutions |
| Contra Costa County | Walnut Creek Police Department | Uses ALPR | Between 6 months and 1 year | Vigilant Solutions |
| Del Norte County | Crescent City Police Department | Does Not Use ALPR | ||
| El Dorado County | El Dorado County Sheriff | Uses ALPR | Greater than 5 years | Vigilant Solutions |
| El Dorado County | Placerville Police Department | Uses ALPR | 6 months or Less | Vigilant Solutions |
| El Dorado County | South Lake Tahoe Police Department | Planning to Use ALPR | ||
| Fresno County | Clovis Police Department | Uses ALPR | Greater than 5 years | ELSAG, Vigilant Solutions |
| Fresno County | Coalinga Police Department | Does Not Use ALPR | ||
| Fresno County | Firebaugh Police Department | Does Not Use ALPR | ||
| Fresno County | Fowler Police Department | Does Not Use ALPR | ||
| Fresno County | Fresno County Sheriff | Uses ALPR | Between 1 and 2 years | Neology, Inc. or PIPS Technology, Vigilant Solutions |
| Fresno County | Fresno Police Department | Uses ALPR | Between 6 months and 1 year | ELSAG, Vigilant Solutions |
| Fresno County | Huron Police Department | Does Not Use ALPR | ||
| Fresno County | Kerman Police Department | Does Not Use ALPR | ||
| Fresno County | Kingsburg Police Department | Does Not Use ALPR | ||
| Fresno County | Mendota Police Department | Does Not Use ALPR | ||
| Fresno County | Orange Cove Police Department | Planning to Use ALPR | ||
| Fresno County | Parlier Police Department | Does Not Use ALPR | ||
| Fresno County | Reedley Police Department | Does Not Use ALPR | ||
| Fresno County | Sanger Police Department | Does Not Use ALPR | ||
| Fresno County | Selma Police Department | Planning to Use ALPR | ||
| Glenn County | Glenn County Sheriff | Does Not Use ALPR | ||
| Glenn County | Orland Police Department | Does Not Use ALPR | ||
| Humboldt County | Arcata Police Department | Uses ALPR | Between 1 and 2 years | Neology, Inc. or PIPS Technology |
| Humboldt County | Eureka Police Department | Planning to Use ALPR | ||
| Humboldt County | Ferndale Police Department | Does Not Use ALPR | ||
| Humboldt County | Fortuna Police Department | Does Not Use ALPR | ||
| Humboldt County | Humboldt County Sheriff | Planning to Use ALPR | ||
| Humboldt County | Rio Dell Police Department | Does Not Use ALPR | ||
| Imperial County | Brawley Police Department | Uses ALPR | Between 1 and 2 years | Vigilant Solutions |
| Imperial County | Calexico Police Department | Planning to Use ALPR | ||
| Imperial County | El Centro Police Department | Uses ALPR | Between 1 and 2 years | Vigilant Solutions |
| Imperial County | Imperial County Sheriff | Uses ALPR | Between 1 and 2 years | Vigilant Solutions |
| Imperial County | Imperial Police Department | Uses ALPR | Between 2 and 5 years | Vigilant Solutions |
| Imperial County | Westmorland Police Department | Uses ALPR | Between 1 and 2 years | Vigilant Solutions |
| Inyo County | Bishop Police Department | Planning to Use ALPR | ||
| Inyo County | Inyo County Sheriff | Does Not Use ALPR | ||
| Kern County | Arvin Police Department | Does Not Use ALPR | ||
| Kern County | Bakersfield Police Department | Uses ALPR | Vigilant Solutions | |
| Kern County | Bear Valley Police Department | Does Not Use ALPR | ||
| Kern County | California City Police Department | Planning to Use ALPR | ||
| Kern County | Delano Police Department | Does Not Use ALPR | ||
| Kern County | Kern County Sheriff | Uses ALPR | Between 2 and 5 years | Vigilant Solutions |
| Kern County | McFarland Police Department | Does Not Use ALPR | ||
| Kern County | Ridgecrest Police Department | Does Not Use ALPR | ||
| Kern County | Shafter Police Department | Does Not Use ALPR | ||
| Kern County | Stallion Springs Police Department | Does Not Use ALPR | ||
| Kern County | Taft Police Department | Does Not Use ALPR | ||
| Kern County | Tehachapi Police Department | Planning to Use ALPR | ||
| Kings County | Avenal Police Department | Does Not Use ALPR | ||
| Kings County | Corcoran Police Department | Does Not Use ALPR | ||
| Kings County | Hanford Police Department | Does Not Use ALPR | ||
| Kings County | Kings County Sheriff | Does Not Use ALPR | ||
| Kings County | Lemoore Police Department | Does Not Use ALPR | ||
| Lake County | Clearlake Police Department | Uses ALPR | Between 6 months and 1 year | Other |
| Lake County | Lake County Sheriff | Uses ALPR | Less than 1 day | Other |
| Lassen County | Lassen County Sheriff | Does Not Use ALPR | ||
| Lassen County | Susanville Police Department | Does Not Use ALPR | ||
| Los Angeles County | Alhambra Police Department | Uses ALPR | Between 1 and 2 years | Neology, Inc. or PIPS Technology |
| Los Angeles County | Arcadia Police Department | Uses ALPR | Between 1 and 2 years | Vigilant Solutions |
| Los Angeles County | Azusa Police Department | Uses ALPR | Between 2 and 5 years | Other |
| Los Angeles County | Baldwin Park Police Department | Does Not Use ALPR | ||
| Los Angeles County | Bell Gardens Police Department | Uses ALPR | Between 2 and 5 years | Neology, Inc. or PIPS Technology, Vigilant Solutions |
| Los Angeles County | Bell Police Department | Uses ALPR | Less than 1 day | Vigilant Solutions |
| Los Angeles County | Beverly Hills Police Department | Uses ALPR | Between 1 and 2 years | Neology, Inc. or PIPS Technology, Vigilant Solutions |
| Los Angeles County | Burbank Police Department | Uses ALPR | Between 6 months and 1 year | Neology, Inc. or PIPS Technology, Vigilant Solutions |
| Los Angeles County | Claremont Police Department | Uses ALPR | Between 1 and 2 years | Vigilant Solutions |
| Los Angeles County | Covina Police Department | Uses ALPR | Between 1 and 2 years | Other |
| Los Angeles County | Culver City Police Department | Uses ALPR | Between 1 and 2 years | Other |
| Los Angeles County | Downey Police Department | Uses ALPR | 6 months or Less | Neology, Inc. or PIPS Technology, Vigilant Solutions |
| Los Angeles County | El Monte Police Department | Does Not Use ALPR | ||
| Los Angeles County | El Segundo Police Department | Uses ALPR | Between 6 months and 1 year | Vigilant Solutions |
| Los Angeles County | Gardena Police Department | Uses ALPR | Between 2 and 5 years | Vigilant Solutions |
| Los Angeles County | Glendale Police Department | Uses ALPR | Between 2 and 5 years | Vigilant Solutions |
| Los Angeles County | Glendora Police Department | Uses ALPR | 6 months or Less | Neology, Inc. or PIPS Technology, Vigilant Solutions |
| Los Angeles County | Hawthorne Police Department | Uses ALPR | Between 6 months and 1 year | Vigilant Solutions |
| Los Angeles County | Hermosa Beach Police Department | Uses ALPR | Between 6 months and 1 year | Vigilant Solutions |
| Los Angeles County | Huntington Park Police Department | Uses ALPR | Between 1 and 2 years | Neology, Inc. or PIPS Technology |
| Los Angeles County | Inglewood Police Department | Uses ALPR | Between 1 and 2 years | Vigilant Solutions |
| Los Angeles County | Irwindale Police Department | Does Not Use ALPR | ||
| Los Angeles County | La Verne Police Department | Uses ALPR | 6 months or Less | Vigilant Solutions |
| Los Angeles County | Long Beach Police Department | Uses ALPR | Between 1 and 2 years | Vigilant Solutions |
| Los Angeles County | Los Angeles County Sheriff | Uses ALPR | Between 2 and 5 years | Neology, Inc. or PIPS Technology, Vigilant Solutions |
| Los Angeles County | Los Angeles Police Department | Uses ALPR | Greater than 5 years | Neology, Inc. or PIPS Technology |
| Los Angeles County | Manhattan Beach Police Department | Uses ALPR | Between 6 months and 1 year | Vigilant Solutions |
| Los Angeles County | Monrovia Police Department | Uses ALPR | Between 2 and 5 years | Neology, Inc. or PIPS Technology |
| Los Angeles County | Montebello Police Department | Uses ALPR | Between 6 months and 1 year | Vigilant Solutions |
| Los Angeles County | Monterey Park Police Department | Uses ALPR | Between 2 and 5 years | Vigilant Solutions |
| Los Angeles County | Palos Verdes Estates Police Department | Uses ALPR | Between 6 months and 1 year | Vigilant Solutions |
| Los Angeles County | Pasadena Police Department | Uses ALPR | ||
| Los Angeles County | Pomona Police Department | Uses ALPR | Between 2 and 5 years | Vigilant Solutions |
| Los Angeles County | Redondo Beach Police Department | Uses ALPR | Greater than 5 years | Vigilant Solutions |
| Los Angeles County | San Fernando Police Department | Uses ALPR | Between 1 and 2 years | Neology, Inc. or PIPS Technology |
| Los Angeles County | San Gabriel Police Department | Uses ALPR | Greater than 5 years | Neology, Inc. or PIPS Technology |
| Los Angeles County | San Marino Police Department | Planning to Use ALPR | ||
| Los Angeles County | Santa Monica Police Department | Uses ALPR | Greater than 5 years | Vigilant Solutions |
| Los Angeles County | Sierra Madre Police Department | Does Not Use ALPR | ||
| Los Angeles County | Signal Hill Police Department | Uses ALPR | Between 1 and 2 years | Vigilant Solutions, Other |
| Los Angeles County | South Gate Police Department | Uses ALPR | Between 1 and 2 years | Neology, Inc. or PIPS Technology |
| Los Angeles County | South Pasadena Police Department | Uses ALPR | Between 2 and 5 years | Vigilant Solutions |
| Los Angeles County | Torrance Police Department | Uses ALPR | Between 2 and 5 years | Vigilant Solutions |
| Los Angeles County | Vernon Police Department | Uses ALPR | Between 6 months and 1 year | Vigilant Solutions |
| Los Angeles County | West Covina Police Department | Uses ALPR | Between 2 and 5 years | Vigilant Solutions |
| Los Angeles County | Whittier Police Department | Uses ALPR | Less than 1 day | Vigilant Solutions |
| Madera County | Chowchilla Police Department | Uses ALPR | Between 2 and 5 years | Vigilant Solutions |
| Madera County | Madera County Sheriff | Uses ALPR | Between 6 months and 1 year | Vigilant Solutions |
| Madera County | Madera Police Department | Uses ALPR | Between 6 months and 1 year | Vigilant Solutions |
| Marin County | Belvedere Police Department | Uses ALPR | Between 1 and 2 years | Vigilant Solutions |
| Marin County | Central Marin Police | Uses ALPR | Between 6 months and 1 year | Other |
| Marin County | Fairfax Police Department | Does Not Use ALPR | ||
| Marin County | Marin County Sheriff | Uses ALPR | Between 6 months and 1 year | Vigilant Solutions |
| Marin County | Mill Valley Police Department | Uses ALPR | Between 6 months and 1 year | Vigilant Solutions |
| Marin County | Novato Police Department | Uses ALPR | Greater than 5 years | Vigilant Solutions |
| Marin County | Ross Police Department | Does Not Use ALPR | ||
| Marin County | San Rafael Police Department | Uses ALPR | Greater than 5 years | Vigilant Solutions |
| Marin County | Sausalito Police Department | Uses ALPR | Between 6 months and 1 year | Vigilant Solutions |
| Marin County | Tiburon Police Department | Uses ALPR | Between 6 months and 1 year | Vigilant Solutions |
| Mariposa County | Mariposa County Sheriff | Does Not Use ALPR | ||
| Mendocino County | Fort Bragg Police Department | Does Not Use ALPR | ||
| Mendocino County | Ukiah Police Department | Does Not Use ALPR | ||
| Mendocino County | Willits Police Department | Does Not Use ALPR | ||
| Merced County | Atwater Police Department | Does Not Use ALPR | ||
| Merced County | Dos Palos Police Department | Does Not Use ALPR | ||
| Merced County | Gustine Police Department | Does Not Use ALPR | ||
| Merced County | Livingston Police Department | Does Not Use ALPR | ||
| Merced County | Los Banos Police Department | Planning to Use ALPR | ||
| Merced County | Merced County Sheriff | Does Not Use ALPR | ||
| Merced County | Merced Police Department | Uses ALPR | Less than 1 day | Vigilant Solutions |
| Modoc County | Alturas Police Department | Does Not Use ALPR | ||
| Modoc County | Modoc County Sheriff | Does Not Use ALPR | ||
| Mono County | Mammoth Lakes Police Department | Does Not Use ALPR | ||
| Mono County | Mono County Sheriff | Does Not Use ALPR | ||
| Monterey County | Carmel Police Department | Uses ALPR | Between 6 months and 1 year | Genetec AutoVu |
| Monterey County | Del Rey Oaks Police Department | Does Not Use ALPR | ||
| Monterey County | Gonzales Police Department | Does Not Use ALPR | ||
| Monterey County | Greenfield Police Department | Does Not Use ALPR | ||
| Monterey County | King City Police Department | Planning to Use ALPR | ||
| Monterey County | Marina Police Department | Planning to Use ALPR | ||
| Monterey County | Monterey County Sheriff | Planning to Use ALPR | ||
| Monterey County | Monterey Police Department | Planning to Use ALPR | ||
| Monterey County | Pacific Grove Police Department | Planning to Use ALPR | ||
| Monterey County | Salinas Police Department | Uses ALPR | Greater than 5 years | Vigilant Solutions |
| Monterey County | Sand City Police Department | Uses ALPR | Less than 1 day | Other |
| Monterey County | Seaside Police Department | Does Not Use ALPR | ||
| Monterey County | Soledad Police Department | Does Not Use ALPR | ||
| Napa County | Calistoga Police Department | Does Not Use ALPR | ||
| Napa County | Napa County Sheriff | Does Not Use ALPR | ||
| Napa County | Napa Police Department | Uses ALPR | Less than 1 day | Other |
| Napa County | Saint Helena Police Department | Does Not Use ALPR | ||
| Nevada County | Grass Valley Police Department | Planning to Use ALPR | ||
| Nevada County | Nevada City Police Department | Does Not Use ALPR | ||
| Nevada County | Nevada County Sheriff | Does Not Use ALPR | ||
| Nevada County | Truckee Police Department | Does Not Use ALPR | ||
| Orange County | Anaheim Police Department | Uses ALPR | Greater than 5 years | Vigilant Solutions |
| Orange County | Brea Police Department | Uses ALPR | Greater than 5 years | Vigilant Solutions |
| Orange County | Buena Park Police Department | Uses ALPR | Between 1 and 2 years | Vigilant Solutions |
| Orange County | Costa Mesa Police Department | Uses ALPR | Between 2 and 5 years | Vigilant Solutions |
| Orange County | Cypress Police Department | Uses ALPR | Between 6 months and 1 year | Vigilant Solutions |
| Orange County | Fountain Valley Police Department | Uses ALPR | Vigilant Solutions | |
| Orange County | Fullerton Police Department | Uses ALPR | Between 1 and 2 years | Vigilant Solutions |
| Orange County | Garden Grove Police Department | Uses ALPR | Between 2 and 5 years | Vigilant Solutions |
| Orange County | Huntington Beach Police Department | Uses ALPR | Between 6 months and 1 year | Vigilant Solutions |
| Orange County | Irvine Police Department | Uses ALPR | Between 2 and 5 years | Vigilant Solutions |
| Orange County | La Habra Police Department | Uses ALPR | Between 2 and 5 years | Vigilant Solutions |
| Orange County | La Palma Police Department | Uses ALPR | Less than 1 day | Vigilant Solutions |
| Orange County | Laguna Beach Police Department | Uses ALPR | Between 1 and 2 years | Vigilant Solutions |
| Orange County | Los Alamitos Police Department | Uses ALPR | Between 2 and 5 years | Vigilant Solutions |
| Orange County | Newport Beach Police Department | Uses ALPR | Greater than 5 years | Vigilant Solutions |
| Orange County | Orange County Sheriff | Uses ALPR | Between 6 months and 1 year | Vigilant Solutions |
| Orange County | Orange Police Department | Uses ALPR | Between 6 months and 1 year | Vigilant Solutions |
| Orange County | Placentia Police Department | Uses ALPR | Greater than 5 years | Vigilant Solutions |
| Orange County | Santa Ana Police Department | Uses ALPR | Between 6 months and 1 year | Vigilant Solutions |
| Orange County | Seal Beach Police Department | Uses ALPR | Less than 1 day | Genetec AutoVu, Vigilant Solutions |
| Orange County | Tustin Police Department | Uses ALPR | Greater than 5 years | Vigilant Solutions |
| Orange County | Westminster Police Department | Uses ALPR | Less than 1 day | Vigilant Solutions |
| Placer County | Auburn Police Department | Uses ALPR | Greater than 5 years | Vigilant Solutions |
| Placer County | Lincoln Police Department | Uses ALPR | Less than 1 day | Vigilant Solutions |
| Placer County | Placer County Sheriff | Uses ALPR | Less than 1 day | Vigilant Solutions |
| Placer County | Rocklin Police Department | Uses ALPR | Between 1 and 2 years | Vigilant Solutions |
| Placer County | Roseville Police Department | Uses ALPR | Between 6 months and 1 year | Vigilant Solutions |
| Plumas County | Plumas County Sheriff | Does Not Use ALPR | ||
| Riverside County | Banning Police Department | Does Not Use ALPR | ||
| Riverside County | Beaumont Police Department | Uses ALPR | 6 months or Less | Vigilant Solutions |
| Riverside County | Blythe Police Department | Does Not Use ALPR | ||
| Riverside County | Cathedral City Police Department | Uses ALPR | Between 2 and 5 years | Vigilant Solutions |
| Riverside County | Corona Police Department | Uses ALPR | Between 1 and 2 years | Vigilant Solutions |
| Riverside County | Desert Hot Springs Police Department | Uses ALPR | Greater than 5 years | Vigilant Solutions |
| Riverside County | Hemet Police Department | Uses ALPR | Between 1 and 2 years | Vigilant Solutions |
| Riverside County | Indio Police Department | Uses ALPR | Between 6 months and 1 year | Neology, Inc. or PIPS Technology |
| Riverside County | Menifee Police Department | Planning to Use ALPR | ||
| Riverside County | Murrieta Police Department | Uses ALPR | Between 1 and 2 years | Vigilant Solutions |
| Riverside County | Palm Springs Police Department | Planning to Use ALPR | ||
| Riverside County | Riverside County Sheriff | Uses ALPR | Between 1 and 2 years | Vigilant Solutions |
| Riverside County | Riverside Police Department | Uses ALPR | Between 2 and 5 years | Vigilant Solutions |
| Sacramento County | Citrus Heights Police Department | Uses ALPR | Between 6 months and 1 year | Vigilant Solutions |
| Sacramento County | Elk Grove Police Department | Uses ALPR | Between 1 and 2 years | Vigilant Solutions |
| Sacramento County | Folsom Police Department | Uses ALPR | Between 6 months and 1 year | Vigilant Solutions |
| Sacramento County | Galt Police Department | Uses ALPR | Between 1 and 2 years | Vigilant Solutions |
| Sacramento County | Sacramento County Sheriff | Uses ALPR | Between 1 and 2 years | Vigilant Solutions |
| Sacramento County | Sacramento Police Department | Uses ALPR | Between 1 and 2 years | Vigilant Solutions |
| San Benito County | Hollister Police Department | Uses ALPR | Between 6 months and 1 year | Vigilant Solutions |
| San Benito County | San Benito County Sheriff | Does Not Use ALPR | ||
| San Bernardino County | Chino Police Department | Uses ALPR | Between 6 months and 1 year | Vigilant Solutions |
| San Bernardino County | Colton Police Department | Uses ALPR | 6 months or Less | Other |
| San Bernardino County | Fontana Police Department | Uses ALPR | Between 1 and 2 years | Vigilant Solutions |
| San Bernardino County | Montclair Police Department | Uses ALPR | Between 1 and 2 years | Neology, Inc. or PIPS Technology, Other |
| San Bernardino County | Ontario Police Department | Uses ALPR | Between 6 months and 1 year | Vigilant Solutions |
| San Bernardino County | Redlands Police Department | Uses ALPR | Between 6 months and 1 year | Vigilant Solutions, Other |
| San Bernardino County | Rialto Police Department | Planning to Use ALPR | ||
| San Bernardino County | San Bernardino County Sheriff | Uses ALPR | Between 1 and 2 years | Neology, Inc. or PIPS Technology, Vigilant Solutions |
| San Bernardino County | San Bernardino Police Department | Uses ALPR | Greater than 5 years | Vigilant Solutions |
| San Bernardino County | Upland Police Department | Uses ALPR | Between 6 months and 1 year | ELSAG, Vigilant Solutions, Other |
| San Diego County | Carlsbad Police Department | Uses ALPR | Between 1 and 2 years | Vigilant Solutions |
| San Diego County | Chula Vista Police Department | Uses ALPR | Between 6 months and 1 year | Vigilant Solutions |
| San Diego County | Coronado Police Department | Uses ALPR | Between 6 months and 1 year | Neology, Inc. or PIPS Technology, Vigilant Solutions |
| San Diego County | El Cajon Police Department | Uses ALPR | Less than 1 day | Other |
| San Diego County | Escondido Police Department | Uses ALPR | Between 1 and 2 years | Vigilant Solutions |
| San Diego County | La Mesa Police Department | Uses ALPR | Between 2 and 5 years | Vigilant Solutions |
| San Diego County | National City Police Department | Uses ALPR | Less than 1 day | Neology, Inc. or PIPS Technology |
| San Diego County | San Diego County Sheriff | Uses ALPR | Between 6 months and 1 year | Vigilant Solutions |
| San Diego County | San Diego Police Department | Uses ALPR | Between 6 months and 1 year | Neology, Inc. or PIPS Technology, Vigilant Solutions |
| San Francisco County | San Francisco Police Department | Uses ALPR | Between 6 months and 1 year | Neology, Inc. or PIPS Technology, Other |
| San Joaquin County | Escalon Police Department | Planning to Use ALPR | ||
| San Joaquin County | Manteca Police Department | Uses ALPR | Less than 1 day | Vigilant Solutions |
| San Joaquin County | Ripon Police Department | Uses ALPR | Greater than 5 years | Vigilant Solutions |
| San Joaquin County | San Joaquin County Sheriff | Uses ALPR | 6 months or Less | Vigilant Solutions |
| San Joaquin County | Stockton Police Department | Uses ALPR | Between 1 and 2 years | Vigilant Solutions |
| San Joaquin County | Tracy Police Department | Uses ALPR | Between 6 months and 1 year | Vigilant Solutions |
| San Luis Obispo County | Arroyo Grande Police Department | Does Not Use ALPR | ||
| San Luis Obispo County | Atascadero Police Department | Does Not Use ALPR | ||
| San Luis Obispo County | Grover Beach Police Department | Uses ALPR | Between 1 and 2 years | Other |
| San Luis Obispo County | Morro Bay Police Department | Planning to Use ALPR | ||
| San Luis Obispo County | Paso Robles Police Department | Uses ALPR | Less than 1 day | Vigilant Solutions |
| San Luis Obispo County | Pismo Beach Police Department | Uses ALPR | Between 6 months and 1 year | Other |
| San Luis Obispo County | San Luis Obispo County Sheriff | Uses ALPR | Between 6 months and 1 year | Vigilant Solutions |
| San Luis Obispo County | San Luis Obispo Police Department | Planning to Use ALPR | ||
| San Mateo County | Atherton Police Department | Uses ALPR | Between 6 months and 1 year | Neology, Inc. or PIPS Technology |
| San Mateo County | Belmont Police Department | Does Not Use ALPR | ||
| San Mateo County | Brisbane Police Department | Uses ALPR | Between 6 months and 1 year | Neology, Inc. or PIPS Technology |
| San Mateo County | Broadmoor Police Department | Planning to Use ALPR | ||
| San Mateo County | Burlingame Police Department | Uses ALPR | Less than 1 day | Other |
| San Mateo County | Colma Police Department | Does Not Use ALPR | ||
| San Mateo County | Daly City Police Department | Uses ALPR | Between 6 months and 1 year | Other |
| San Mateo County | East Palo Alto Police Department | Uses ALPR | Less than 1 day | Neology, Inc. or PIPS Technology |
| San Mateo County | Foster City Police Department | Planning to Use ALPR | ||
| San Mateo County | Hillsborough Police Department | Uses ALPR | Less than 1 day | Other |
| San Mateo County | Menlo Park Police Department | Uses ALPR | 6 months or Less | Neology, Inc. or PIPS Technology |
| San Mateo County | Pacifica Police Department | Uses ALPR | Between 6 months and 1 year | Neology, Inc. or PIPS Technology |
| San Mateo County | Redwood City Police Department | Uses ALPR | Between 6 months and 1 year | Neology, Inc. or PIPS Technology, Vigilant Solutions |
| San Mateo County | San Bruno Police Department | Uses ALPR | Between 6 months and 1 year | Neology, Inc. or PIPS Technology, Vigilant Solutions |
| San Mateo County | San Mateo County Sheriff | Uses ALPR | Between 6 months and 1 year | Vigilant Solutions |
| San Mateo County | San Mateo Police Department | Uses ALPR | Between 6 months and 1 year | Neology, Inc. or PIPS Technology, Vigilant Solutions |
| San Mateo County | South San Francisco Police Department | Uses ALPR | Between 6 months and 1 year | Other |
| Santa Barbara County | Guadalupe Police Department | Does Not Use ALPR | ||
| Santa Barbara County | Lompoc Police Department | Does Not Use ALPR | ||
| Santa Barbara County | Santa Barbara County Sheriff | Does Not Use ALPR | ||
| Santa Barbara County | Santa Barbara Police Department | Uses ALPR | Less than 1 day | Other |
| Santa Barbara County | Santa Maria Police Department | Planning to Use ALPR | ||
| Santa Clara County | Campbell Police Department | Uses ALPR | Between 1 and 2 years | Neology, Inc. or PIPS Technology |
| Santa Clara County | Gilroy Police Department | Uses ALPR | Between 1 and 2 years | Neology, Inc. or PIPS Technology |
| Santa Clara County | Los Altos Police Department | Uses ALPR | Between 6 months and 1 year | Neology, Inc. or PIPS Technology |
| Santa Clara County | Los Gatos - Monte Sereno Police Department | Uses ALPR | Between 1 and 2 years | Other |
| Santa Clara County | Milpitas Police Department | Uses ALPR | Between 6 months and 1 year | Neology, Inc. or PIPS Technology |
| Santa Clara County | Morgan Hill Police Department | Uses ALPR | Between 6 months and 1 year | Other |
| Santa Clara County | Mountain View Police Department | Uses ALPR | Between 6 months and 1 year | Neology, Inc. or PIPS Technology |
| Santa Clara County | Palo Alto Police Department | Uses ALPR | Between 1 and 2 years | Other |
| Santa Clara County | San Jose Police Department | Uses ALPR | Between 6 months and 1 year | Neology, Inc. or PIPS Technology |
| Santa Clara County | Santa Clara County Sheriff | Uses ALPR | Between 6 months and 1 year | Neology, Inc. or PIPS Technology |
| Santa Clara County | Santa Clara Police Department | Uses ALPR | Less than 1 day | Other |
| Santa Clara County | Sunnyvale Department of Public Safety | Uses ALPR | Between 1 and 2 years | Neology, Inc. or PIPS Technology |
| Santa Cruz County | Capitola Police Department | Uses ALPR | Less than 1 day | All Traffic Solutions (ATS), Genetec AutoVu |
| Santa Cruz County | Santa Cruz County Sheriff | Does Not Use ALPR | ||
| Santa Cruz County | Santa Cruz Police Department | Does Not Use ALPR | ||
| Santa Cruz County | Scotts Valley Police Department | Does Not Use ALPR | ||
| Santa Cruz County | Watsonville Police Department | Does Not Use ALPR | ||
| Shasta County | Redding Police Department | Planning to Use ALPR | ||
| Shasta County | Shasta County Sheriff | Uses ALPR | Less than 1 day | Neology, Inc. or PIPS Technology, Vigilant Solutions |
| Sierra County | Sierra County Sheriff | Does Not Use ALPR | ||
| Siskiyou County | Etna Police Department | Does Not Use ALPR | ||
| Siskiyou County | Lake Shastina Police Department | Does Not Use ALPR | ||
| Siskiyou County | Tulelake Police Department | Does Not Use ALPR | ||
| Siskiyou County | Weed Police Department | Does Not Use ALPR | ||
| Siskiyou County | Yreka Police Department | Does Not Use ALPR | ||
| Solano County | Benicia Police Department | Uses ALPR | Between 1 and 2 years | Neology, Inc. or PIPS Technology |
| Solano County | Dixon Police Department | Uses ALPR | Between 2 and 5 years | Vigilant Solutions |
| Solano County | Fairfield Police Department | Uses ALPR | Less than 1 day | Vigilant Solutions |
| Solano County | Rio Vista Police Department | Uses ALPR | 6 months or Less | Other |
| Solano County | Solano County Sheriff | Uses ALPR | Less than 1 day | Neology, Inc. or PIPS Technology, Vigilant Solutions, Other |
| Solano County | Suisun City Police Department | Planning to Use ALPR | ||
| Solano County | Vacaville Police Department | Uses ALPR | 6 months or Less | Neology, Inc. or PIPS Technology |
| Solano County | Vallejo Police Department | Uses ALPR | Between 6 months and 1 year | Neology, Inc. or PIPS Technology, Other |
| Sonoma County | Cloverdale Police Department | Does Not Use ALPR | ||
| Sonoma County | Cotati Police Department | Planning to Use ALPR | ||
| Sonoma County | Healdsburg Police Department | Uses ALPR | Between 6 months and 1 year | Other |
| Sonoma County | Petaluma Police Department | Uses ALPR | Between 6 months and 1 year | Genetec AutoVu, Vigilant Solutions |
| Sonoma County | Rohnert Park Department of Public Safety | Uses ALPR | Between 6 months and 1 year | Vigilant Solutions |
| Sonoma County | Santa Rosa Police Department | Planning to Use ALPR | ||
| Sonoma County | Sebastopol Police Department | Does Not Use ALPR | ||
| Sonoma County | Sonoma County Sheriff | Uses ALPR | Less than 1 day | Other |
| Stanislaus County | Ceres Police Department | Uses ALPR | Between 6 months and 1 year | Other |
| Stanislaus County | Modesto Police Department | Uses ALPR | Between 6 months and 1 year | Vigilant Solutions |
| Stanislaus County | Newman Police Department | Does Not Use ALPR | ||
| Stanislaus County | Oakdale Police Department | Planning to Use ALPR | ||
| Stanislaus County | Stanislaus County Sheriff | Uses ALPR | Between 6 months and 1 year | Vigilant Solutions, Other |
| Stanislaus County | Turlock Police Department | Planning to Use ALPR | ||
| Sutter County | Sutter County Sheriff | Uses ALPR | Greater than 5 years | Vigilant Solutions |
| Sutter County | Yuba City Police Department | Does Not Use ALPR | ||
| Tehama County | Corning Police Department | Uses ALPR | Between 1 and 2 years | Vigilant Solutions |
| Tehama County | Red Bluff Police Department | Uses ALPR | Between 1 and 2 years | Vigilant Solutions |
| Tehama County | Tehama County Sheriff | Uses ALPR | Between 1 and 2 years | Vigilant Solutions |
| Trinity County | Trinity County Sheriff | Does Not Use ALPR | ||
| Tulare County | Dinuba Police Department | Does Not Use ALPR | ||
| Tulare County | Exeter Police Department | Does Not Use ALPR | ||
| Tulare County | Farmersville Police Department | Does Not Use ALPR | ||
| Tulare County | Lindsay Police Department | Does Not Use ALPR | ||
| Tulare County | Porterville Police Department | Does Not Use ALPR | ||
| Tulare County | Tulare County Sheriff | Does Not Use ALPR | ||
| Tulare County | Tulare Police Department | Uses ALPR | Between 1 and 2 years | Vigilant Solutions |
| Tulare County | Visalia Police Department | Uses ALPR | Between 6 months and 1 year | Other |
| Tulare County | Woodlake Police Department | Does Not Use ALPR | ||
| Tuolumne County | Sonora Police Department | Does Not Use ALPR | ||
| Tuolumne County | Tuolumne County Sheriff | Does Not Use ALPR | ||
| Ventura County | Oxnard Police Department | Uses ALPR | Between 6 months and 1 year | Vigilant Solutions |
| Ventura County | Port Hueneme Police Department | Uses ALPR | 6 months or Less | Vigilant Solutions |
| Ventura County | Santa Paula Police Department | Does Not Use ALPR | ||
| Ventura County | Simi Valley Police Department | Uses ALPR | Between 1 and 2 years | Vigilant Solutions |
| Ventura County | Ventura County Sheriff | Uses ALPR | Between 2 and 5 years | Vigilant Solutions |
| Ventura County | Ventura Police Department | Uses ALPR | Less than 1 day | Vigilant Solutions |
| Yolo County | Davis Police Department | Uses ALPR | Between 6 months and 1 year | Genetec AutoVu |
| Yolo County | West Sacramento Police Department | Uses ALPR | Between 2 and 5 years | Vigilant Solutions |
| Yolo County | Winters Police Department | Planning to Use ALPR | ||
| Yolo County | Woodland Police Department | Uses ALPR | Between 6 months and 1 year | Vigilant Solutions |
| Yolo County | Yolo County Sheriff | Uses ALPR | Between 1 and 2 years | Vigilant Solutions |
| Yuba County | Marysville Police Department | Does Not Use ALPR | ||
| Yuba County | Wheatland Police Department | Does Not Use ALPR | ||
| Yuba County | Yuba County Sheriff | Does Not Use ALPR |
Source: Analysis of Survey Results from August 2019.
Note: Police and sheriff departments may use more than one ALPR vendor.
Three responding agencies that use ALPR systems did not indicate a retention period for their information: Bakersfield Police Department, Fountain Valley Police Department, and Pasadena Police Department. Further, Pasadena Police Department did not indicate which vendor provides its ALPR services.