Napa County Inmate Population Overview
Napa County has one adult detention facility for this project: the Napa County Department of Corrections / Napa County Jail. The county describes the jail as an adult facility for male and female incarcerated persons, including people awaiting court action and people serving local sentences. Napa County also publishes custody data through the CJNet public reports hub, which is the county's main public window into current custody, recent bookings, recent releases, warrants, and California Values Act reporting.
The local operator matters. Napa County says the Board of Supervisors separated Corrections from the Sheriff's Office in 1975. That means jail housing, intake, mail, visitation, commissary, and in-custody reports are Department of Corrections functions, while Sheriff Oscar Ortiz's office remains important for sheriff records, warrant services, and many law-enforcement public-records questions. A user who assumes every Napa County inmate record is a sheriff jail record can miss the correct office.
Napa County Inmate Population Statistics
The best local figures in the research are point-in-time and facility figures, not a full annual average daily population series. The Napa County Department of Corrections About Us page lists the jail's maximum capacity, and the CJNet In Custody Report showed a timestamped count on the research date. Those two facts can be compared, but the result is not a yearly average. It is one roster count against one published capacity figure.
The booking and release reports show movement through the jail. They should not be added to the current count because they cover a different report window. Napa County's Booking Report covers public jail booking information for the past week, while the Release Report covers public releases for the past week. Together they show turnover, not the total Napa County inmate population.
| Measure | Figure | Source / Date |
|---|---|---|
| Maximum capacity | 304 incarcerated persons | Napa County Department of Corrections, inspected May 31, 2026 |
| Facility size | 109,302 square feet | Napa County Corrections Facilities page, inspected May 31, 2026 |
| Current in-custody report count | 251 records | CJNet report data as of 05/31/2026 01:46 PM |
| Past-week booking report count | 69 records | CJNet report data as of 05/31/2026 01:45 PM |
| Past-week release report count | 76 records | CJNet report data as of 05/31/2026 01:47 PM |
| Observed capacity use | About 82.6% | Calculated from 251 current records and 304 published capacity |
Napa County Jail Population Trends
The research did not locate official county annual booking totals, average length of stay, multi-year ADP tables, or a full demographic dashboard. The safer reading is narrow: Napa County publishes a current custody count and past-week booking and release reports through CJNet, while outside trend profiles such as Vera's county profile can give broader context. A build should not turn the point-in-time CJNet count into a yearly trend.
| Year or date | ADP or count | How to read it |
|---|---|---|
| 05/31/2026 01:46 PM | 251 current in-custody records | Timestamped CJNet current custody count, not annual ADP. |
| Past week ending 05/31/2026 | 69 booking records | Booking report window, not a population total. |
| Past week ending 05/31/2026 | 76 release records | Release report window, not a jail census. |
| 2025 and earlier | Not located in official local pages reviewed | Use later BSCC, county, or Vera data only if exact figures are added. |
For reader use, the practical trend signal is the timestamp. CJNet pages show report data as of a specific time, so two searches on different days may return different counts. A new arrest, release, remand booking, transport booking, or transfer to state prison can change what the public report shows.
Napa County Inmate Record Categories
Napa County's adult jail count includes local county custody. That means people booked after arrest, people remanded by court order, transport bookings, and sentenced people who remain in local custody. It does not include every person with a Napa County criminal case. Once a person is sentenced to the California Department of Corrections and Rehabilitation, the correct search channel becomes CDCR CIRIS. Federal custody and immigration custody use separate systems.
- Booking
- The jail intake event that creates or updates a Napa County custody record.
- Remand
- A court order placing a person into jail custody.
- Transport booking
- A custody movement entry, not always a new street arrest.
- Detainer
- A notice or request from another agency. Napa County's SB 54 report says NCDC does not hold someone solely on an ICE detainer request.
- Classification
- The jail process that assigns a security or housing level; public CJNet grids do not show the housing unit.
Napa County Jail Capacity
The county lists the Napa County Department of Corrections / Napa County Jail as a 109,302-square-foot facility with maximum capacity for 304 incarcerated persons. Housing areas named by the county include administrative separation, general population, maximum security, medical unit, observation cells, protective custody, special housing, and temporary holding. Those labels describe jail operations, not public search filters.
The observed CJNet count of 251 records against a 304-person capacity suggests the public report count was below the published maximum at that timestamp. That does not prove the jail was under no strain, and it does not replace state inspection or standards reporting. It is a point-in-time public roster comparison from Napa County's own report data.
The Napa County Corrections Facilities page is the source for building and facility information. The Department of Corrections overview is the source for capacity, role, and operator details.
Napa County Inmate Population Laws
California law shapes what Napa County inmate population information is public, what can be withheld, and how local detention facilities are supervised. The most useful rule for everyday lookup is that specified arrest information must generally be disclosed even when investigatory records are protected. That does not make every jail file public. Medical, classification, juvenile, sealed, and investigative records can remain restricted.
Key California access rules:
Government Code section 7920.000 is the broad California Public Records Act access rule for state and local agency records.
Government Code section 7923.610 covers specified arrest and complaint information that generally must be disclosed.
Penal Code section 6030 directs state minimum standards for local detention facilities.
Penal Code section 6031.1 addresses local detention inspection and standards reporting.
Government Code section 12525 requires death-in-custody reporting to the state.
Search Napa County Inmates
A Napa County inmate lookup starts at the CJNet public reports hub. Napa County does not present the jail roster as a conventional last-name search box. Instead, CJNet offers report grids: Jail In Custody Report, Jail Booking Report, Jail Release Report, California Values Act Report, and Warrant Search. The in-custody report is the closest match to a current jail roster.
The CJNet In Custody Report screenshot shows the current custody grid and timestamp. The image below reflects how Napa County presents a roster-style count and sortable report columns.
The grid format is important because users must sort columns or use the browser find tool rather than rely on a dedicated public name-search field.
- Open CJNet and choose Jail In Custody Report for a person believed to be held now.
- Use browser find or column sorting to locate a name in the visible report grid.
- Read Person Information, Booking Date/Time, Arrest Information, Booking Type, and Charges & Bail.
- If the person is not in current custody, check the Booking Report and Release Report for the past week.
- Switch to CDCR, BOP, or ICE if the person is no longer in Napa County local custody.
Napa County Roster Fields
CJNet's jail reports are public grids, not form-driven roster searches. The data fields still help identify the right person and separate current custody from recent booking or release history. The field table below comes from the research inventory for the in-custody and booking reports.
| Field label | Type | Required | Notes |
|---|---|---|---|
| Jail In Custody Report | Report grid | n/a | No visible public search fields; sortable current-custody grid. |
| Jail Booking Report | Report grid | n/a | Covers public jail booking information for the past week. |
| Jail Release Report | Report grid | n/a | Covers release information for the past week. |
| Booking Date/Time | Sortable column | n/a | Main timing field for the jail event. |
| Person Information | Sortable column | n/a | Name and demographic details grouped in the grid. |
| Booking Type | Display field | n/a | Observed values include Booking, Remand Booking, and Transport Booking. |
| Charges & Bail | Display column | n/a | Shows charge sequence, code, severity, and bail amount or No Bail. |
Napa County Inmate Record Details
Napa County CJNet custody records show enough information for a basic custody check, but they are not full jail files. Visible fields include identifiers, personal descriptors, arrest and booking timing, booking type, and charges with bail. The research did not find public housing unit, cell, medical, classification, attorney visit, or mugshot fields in the CJNet grid.
| Field | What it shows |
|---|---|
| BookingID / ADCFormID | Jail booking and report identifiers in CJNet data. |
| PID | Person identifier used in jail records and mail addressing. |
| FullName | The person's name in the public grid. |
| DOB / age / descriptors | Date of birth, age, race, gender, height, weight, hair, and eye color fields. |
| ArrestDateTime | Arrest timing when available. |
| BookingDateTime | Jail booking timing. |
| OccurrenceDetail | Charge, statute/code, severity marker, and bail amount or status. |
Napa County Released Inmates
For past or released Napa County inmates, CJNet has two short-window reports. The Booking Report covers public jail booking information for the past week. The Release Report covers public release information for the past week and can show FinalReleaseDateTime. If neither report covers the record, the next step is a public-records request through Napa County's public records process or the right law-enforcement records unit.
The Napa County public-records request portal screenshot is tied to the fallback path for older or missing jail records.
A request should identify the person, booking date, PID if known, and the exact record sought. California access laws support specified arrest information, but they do not guarantee every booking file or photo will be released online.
Napa County Custody Systems
Not every Napa County defendant stays in Napa County jail custody. A person sentenced to state prison moves into CDCR custody and should be searched through CIRIS. A federal defendant or federal prisoner may appear in the BOP inmate locator. Immigration custody is checked through ICE ODLS. VINELink California is a notification and person-search channel, not the primary county roster.
| Custody type | Primary lookup | What it covers |
|---|---|---|
| Napa County jail | CJNet In Custody Report | Current local pretrial and sentenced county custody. |
| Recent county booking | CJNet Booking Report | Public booking information for the past week. |
| Recent county release | CJNet Release Report | Public release information for the past week. |
| California state prison | CDCR CIRIS | Sentenced state-prison custody after transfer. |
| Federal custody | BOP Inmate Locator | Federal sentenced or historical federal custody. |
| Immigration custody | ICE ODLS | Current ICE detainee location when searchable. |
Napa County Detention Facility
Napa County's adult inmate population is centered on one local jail. The county did not have an official adult CDCR state prison, BOP federal prison, or dedicated ICE detention facility physically located in Napa County in the research file. City police agencies may make arrests, but official sources did not show a separate municipal jail roster for this site.
- Napa County Department of Corrections / Napa County Jail: adult county jail for male and female pre-sentenced and sentenced local custody.
Napa County's California Values Act report is a useful policy source for ICE-related questions. It says NCDC complies with AB 4, AB 2792, and SB 54 and does not hold anyone solely on an ICE detainer request.
Napa County Inmate Population FAQ
How large is the Napa County inmate population? The public CJNet In Custody Report showed 251 records as of 05/31/2026 01:46 PM. Napa County lists maximum jail capacity as 304 incarcerated persons. That is a point-in-time custody count, not annual average daily population.
Where do I search for current Napa County inmates? Use the CJNet Jail In Custody Report. It is a sortable public report grid, so browser find and column sorting are more useful than a standard name-search form.
Does Napa County have more than one adult jail? The Facility Map identified one adult county jail for page creation: the Napa County Department of Corrections / Napa County Jail. Juvenile detention and city holding were not included as adult inmate-population facility pages.
What if the person is not listed? Check the Booking Report, Release Report, CDCR CIRIS, BOP, ICE ODLS, and VINELink. If the record is older or missing, use the Napa County public-records request process or contact the proper records office.
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