Reviewed and updated October 9, 2026 by the SearchSystems.net editorial team. The arrest counts are the ones each agency reported to the FBI, as the FBI held them on October 8, 2026. The jail figures are from the Vera Institute of Justice's Incarceration Trends data. Every office link was opened and checked against the office's own site between September 23, 2026 and October 2, 2026.
Napa County, California, has about 133,000 residents (2024 Census Bureau estimate), and arrests there are reported to the FBI by the Napa County Sheriff's Office, five city agencies and four campus, state or other agencies. An arrest leaves the same records whoever makes it: the arresting agency's report, the record of anyone held at the county jail, and, if the District Attorney files charges, a case in the Superior Court of California, County of Napa. This guide says who keeps each one, what it costs and who may see it, with the arrest counts each agency reported.
This guide covers who makes arrests, how many arrests, booking and the jail, finding an arrest, copies, cities and common questions.
Related guides: Napa County public records, California arrest records, California inmate search and California criminal records.
Who Makes Arrests in Napa County
The Napa County Sheriff's Office is the county agency that reports arrests to the FBI for Napa County. It reported 324 arrests for 2025.
Arrests inside five of the county's cities are reported to the FBI by an agency of the city's own, listed here with the Census population and what each reported:
- Napa, 76,921 residents: 1,007 arrests reported for 2025.
- American Canyon, 21,742 residents: 518 arrests reported for 2025.
- St. Helena, 5,257 residents: 85 arrests reported for 2025.
- Calistoga, 5,022 residents: 125 arrests reported for 2025.
- Yountville, 3,280 residents: 12 arrests reported for 2025.
A city on that list is reported separately whether the officers are the city's own or the sheriff's under contract; the FBI's list does not say which.
The FBI's agency list also places these agencies in Napa County: Union Pacific Railroad in Napa County and the Napa Special Investigations Bureau (other); Napa State Hospital (state agency); the Highway Patrol's Napa Area Office (state police).
How Many Arrests Each Agency Reports in Napa County
The FBI publishes every agency's monthly arrest counts on the Crime Data Explorer. These are the full-year totals, all offenses, as the FBI held them on October 8, 2026; a year with months missing or not reported is left out.
- Napa: 1,007 for 2025, 1,185 for 2024, 1,250 for 2023, 1,916 for 2022, 2,058 for 2020 and 2,347 for 2019; 2021 is missing months.
- American Canyon: 518 for 2025, 351 for 2024, 414 for 2023 and 904 for 2022.
- Napa County Sheriff's Office: 324 for 2025, 280 for 2024, 344 for 2023, 805 for 2022, 776 for 2020 and 1,092 for 2019; 2021 is missing months.
- Calistoga: 125 for 2025, 98 for 2024, 91 for 2023, 121 for 2022, 160 for 2020 and 115 for 2019; 2021 is missing months.
- St. Helena: 85 for 2025, 102 for 2024, 136 for 2023, 105 for 2022, 98 for 2020 and 98 for 2019; 2021 is missing months.
- Yountville: 12 for 2025, 6 for 2024, 23 for 2023 and 23 for 2022.
Together, the six agencies with all twelve months of 2025 on file reported 2,071 arrests that year. The five of them with both 2025 and 2024 complete reported 1,553 in 2025 against 1,671 in 2024, down 7.1 percent.
Through August 2026, the six agencies with every month so far on file reported 1,372 arrests, against 1,377 in the same months of 2025.
Booking: Where People Arrested in Napa County Are Held
The county jail is where a person arrested in Napa County and kept in custody ends up, whichever agency made the arrest, though a city department may hold someone in its own cells first and a person cited and released at the scene is never booked. The jail's record of each person held, with the charges, is a public record of the arrest, and once the person is released or sentenced the record continues in the court file.
On an average day in 2025 the jail held about 220 people, down from about 250 in 2019. Its rated capacity in 2019, the last year with a capacity figure, was 275 beds, and it ran at 92 percent of it that year. The figures are from the Vera Institute of Justice's Incarceration Trends data.
SearchSystems opened and checked the custody page of the Napa County Sheriff's Office at app.napacounty.gov/CJNet/Public/BookingReport (page title: Jail Booking Report | County of Napa), which answered when SearchSystems opened it on September 23, 2026.
That page is the place to look for someone who was booked recently; a person cited and released at the scene, or held only a few hours by a city department, will not be on it.
A person sentenced to prison serves the sentence in a facility of the California Department of Corrections and Rehabilitation, whose inmate locator is at cdcr.ca.gov/search.
How to Find Out About an Arrest in Napa County
Whether someone was arrested in Napa County, and what came of it, shows up in two places: the custody page of the Napa County Sheriff's Office described above, for anyone booked into the county jail; the case index of the Superior Court of California, County of Napa, which shows whether charges were filed and the next court date (the court records page SearchSystems verified is at napa.courts.ca.gov/research-records, phone (707) 299-1140).
California does not let the public search another person's statewide criminal history. The record kept by the California Department of Justice goes to the person it belongs to and to employers and agencies the law authorizes; for everyone else the court's own case index is the public record of an arrest that led to a charge.
Getting a Copy of an Arrest Record in Napa County
The report of an arrest is released by the agency that made it; the jail and the court hold their own records of the same event, but not the report. Under the California Public Records Act the agency must answer within 10 days, with up to 14 more days in unusual circumstances, and it may charge the direct cost of copying only, not staff time.
- An arrest by the Napa County Sheriff's Office: ask its records unit.
- An arrest in Napa, American Canyon, St. Helena, Calistoga or Yountville: the records unit of the agency that reports for that city; the city guides linked above name each city's records office.
- An arrest by Union Pacific Railroad in Napa County, Napa State Hospital or the Napa Special Investigations Bureau: the records office of the agency involved.
- The court file of a case that was filed: the Superior Court of California, County of Napa, through the court records page at napa.courts.ca.gov/research-records, phone (707) 299-1140.
- Any county record that is not posted: the county records request page SearchSystems verified is at countyofnapa.nextrequest.com (page title: Requests for Public RecordsNextRequest | Modern FOIA & Public Records Request Software).
- Your own statewide record: a Record Review through Live Scan fingerprinting, form BCIA 8016RR, $25.
Cities in Napa County: Who Reports the Arrests
The FBI lists a separate arrest reporting agency for every one of the five cities in Napa County: Napa, American Canyon, St. Helena, Calistoga and Yountville.
Wherever in the county the arrest happens, a person kept in custody goes to the county jail and the case goes to the Superior Court of California, County of Napa.
SearchSystems has a guide to the offices of these cities in Napa County, with the 2024 Census Bureau population; a city with its own arrest records guide opens there:
- American Canyon (21,742)
- St. Helena (5,257)
Frequently Asked Questions
How many arrests are made in Napa County each year?
Napa reported 1,007 arrests to the FBI for 2025, and the six agencies with every month of 2025 on file reported 2,071 between them.
How do I find out if someone is in jail in Napa County?
Look on the custody page of the Napa County Sheriff's Office at app.napacounty.gov/CJNet/Public/BookingReport. It covers people booked into the county jail.
Where are people arrested in Napa County booked?
Those kept in custody go to the county jail, run by the Napa County Sheriff's Office; a person cited and released at the scene is not booked.
Are arrest records public in Napa County?
The court files of criminal cases in the Superior Court of California, County of Napa are public and can be looked up through the court. The statewide criminal history kept by the California Department of Justice is not public; you can get your own for $25. The arrest report itself is released by the agency that made the arrest, under the California Public Records Act.
How do I get a copy of an arrest report in Napa County?
From the agency that made the arrest: the Napa County Sheriff's Office for its own arrests, or the agency that reports for the city where it happened. Under the California Public Records Act the answer is due within 10 days, with up to 14 more days in unusual circumstances; the county records request page SearchSystems verified is at countyofnapa.nextrequest.com.
Is this the official Napa County website?
No. SearchSystems.net is an independent public records guide, online since 1997. It links to the official county, court and state offices described above and does not hold records, charge for them or take requests.