The Umatilla County Inmate Population
The Umatilla County inmate population has three main parts. The first is the local jail population at the Umatilla County Corrections Facility, which is operated by the Umatilla County Sheriff's Office in Pendleton. That group includes adults in custody who are waiting for court, serving local jail terms, held on warrants, held on probation or parole matters, or waiting for transport. The second and larger part is state prison custody at Eastern Oregon Correctional Institution and Two Rivers Correctional Institution. Those prisons are run by the Oregon Department of Corrections, not by the county sheriff. The third part is possible federal or immigration custody, which is searched through federal systems if a person leaves local or state custody.
That split matters when reading Umatilla County inmate population figures. The sheriff's jail count measures local custody, while DOC population reports count sentenced adults in state prison. A live roster count is only a point-in-time result. An average daily population figure is a year-based operations measure. A prison issue brief may use a different date and purpose than a DOC population profile. The safest approach is to tie each number to its source, date, and custody system.
Umatilla County Inmate Population Statistics
The county jail page reports that the Umatilla County Corrections Facility processed more than 3,700 intakes in 2024 and had an average daily population of 175 adults in custody that year. Umatilla County court-security material says the jail can hold over 250 inmates at a time. The same county also contains two DOC prisons, so the state-prison population physically located in Umatilla County is much larger than the county jail population.
| Measure | Figure | Source / Date |
|---|---|---|
| County jail annual intakes | Over 3,700 | Official jail page, 2024 |
| County jail average daily population | 175 adults in custody | Official jail page, 2024 |
| County jail stated capacity | Over 250 inmates | Umatilla County court-security page |
| Live jail roster count inspected | 164 current incarcerated people | Citizen RIMS count inspection, June 25, 2026 |
| EOCI population profile count | 1,379 adults in custody | Oregon DOC profile, May 1, 2026 |
| TRCI and TRCM profile count | 1,368 combined | Oregon DOC profile, May 1, 2026 |
Umatilla County Inmate Population Trends
Official research did not locate a multi-year county jail average daily population table. The available trend picture is still useful. The county's 2024 jail operations figures show a local jail running below the stated over-250 capacity, while the June 2026 live roster count was also below that capacity. Those numbers should not be treated as a formal trend line because one is a yearly average and one is a single live count.
| Year or Date | Population Figure | How to Read It |
|---|---|---|
| 2024 | 175 average daily jail population | Annual county jail operations statistic |
| June 25, 2026 | 164 current incarcerated people | Point-in-time Citizen RIMS roster count |
| May 1, 2026 | 1,379 EOCI; 1,250 TRCI; 118 TRCM | Oregon DOC population profile snapshot |
For state prisons, Oregon DOC data gives a clearer comparison. EOCI had 1,345 adults in custody in a 2022 issue brief and 1,379 in the May 2026 DOC profile. TRCI had 1,688 adults in custody in the 2022 issue brief, while the 2026 profile listed 1,250 at TRCI and 118 at TRCM. Different reporting products define the prison units differently, so the facility and date should travel with every number.
Who Makes Up Umatilla County Custody
The public county jail roster is thin on demographics by design. Umatilla County Citizen RIMS enables public display of name and age, but the public configuration disables date of birth, sex, race, height, weight, hair color, eye color, build, complexion, address, and photos. The jail page does not publish a local jail breakdown by race, gender, charge class, or pretrial status. That means the public should not infer a full demographic profile from the roster.
DOC data is more detailed for state prisons in Umatilla County. The May 1, 2026 DOC profile listed EOCI at 1,379 adults in custody, with 1,378 male and 1 female. It listed TRCI at 1,250, with 1,244 male and 6 female, and TRCM at 118 male adults in custody. DOC also reports age, race, custody level, crime type, mental-health need, and substance-abuse need by facility. Those figures describe sentenced DOC custody, not the county jail roster.
Umatilla County Jail Capacity
The local capacity picture is direct. Umatilla County's court-security page says the jail can hold more than 250 inmates at any given time. The official jail page reported a 2024 average daily population of 175 adults in custody. No official recent overcrowding emergency, consent decree, or new jail construction source was found in the research. The data supports a capacity comparison, but not a claim that the jail is overcrowded.
Capacity note: A live roster count can rise or fall during the day. Use the jail, court, or records office for official custody confirmation.
Laws Governing Umatilla County Inmates
Oregon law shapes what can be released and how jail information is handled. ORS chapter 192 is the public-records law framework for county and sheriff records, including the right to inspect nonexempt public records and the process for responses and fees. ORS chapter 169 governs local correctional facilities, including jail standards and custody rules. ORS 133.870 and ORS 133.875 limit routine booking-photo release and set rules for removal from publish-for-pay sites.
Key statutes: ORS 192 covers public-records access. ORS 169 covers local correctional facility standards. ORS 133 controls booking-photo release and removal. ORS 135 covers release agreements, conditional release, and security release after arrest.
Umatilla County State Prison Population
Umatilla County is unusual because two state prisons sit inside the county. Eastern Oregon Correctional Institution is in Pendleton. Two Rivers Correctional Institution is in the City of Umatilla and includes medium and minimum custody reporting. People held there are sentenced Oregon DOC adults in custody. They are not on the county jail roster, even if they are physically inside Umatilla County.
The Oregon Offender Search is the correct locator for EOCI and TRCI. It searches by first, middle, last, or SID number and includes a disclaimer that the information is a public service, not an official certified record. When a person is convicted and transferred from the local jail to DOC, the county roster may no longer be the right system. VINELink can help with custody status notifications during transfers.
Search Umatilla County Inmates
The official county jail roster is the Umatilla County Sheriff's Office Citizen RIMS Incarcerated People module. It is the best starting point for current Umatilla County jail custody. The separate Recent Arrests module lists arrests by the sheriff's office and is not the same as current jail custody, because other agencies can book people into the jail.
- Open the Incarcerated People roster, not the Arrests module, for a current custody search.
- Enter a first name, last name, or both.
- Use date filters only to narrow the result set if the interface exposes them.
- Open or expand the booking row for status, booking number, charges, and bail fields.
- If no county jail result appears, check Oregon DOC, BOP, ICE, VINELink, or file a county records request.
Umatilla County Roster Search Fields
Citizen RIMS uses a public web app with name and date filtering. The inspected application also uses paged loading, so results can continue as the user scrolls or loads more. The public configuration says inmate photos are disabled, but booking rows and expandable details are available.
| Field Label | Type | Required | Notes |
|---|---|---|---|
| Start Date | Date | Unspecified | Shared component field for narrowing date ranges when exposed. |
| End Date | Date | Unspecified | Used with the start date when the app displays date filters. |
| First Name | Text | No | The public API accepts firstName and allows blanks. |
| Last Name | Text | No | The public API accepts lastName and allows blanks. |
| Load More | Action | No | The app uses limit and offset behavior for longer result lists. |
What Umatilla County Records Show
A Umatilla County jail roster record can show a booking number, booking date and time, original arresting agency, arrest location, custody status, name, age, charge descriptions, charge level, counts, bail amounts, and total bail. Research found examples with probation violation charges, failure-to-appear bench warrant charges, parole or supervision violation charges, and listed bail amounts. Those examples show field structure, not a final court outcome.
- Booking
- Jail intake that creates a custody record after arrest or transfer.
- Security release
- Oregon's money-deposit release process, often called bail in casual use.
- Hold
- A custody reason from another case, warrant, supervision matter, or agency.
- SID number
- A state identification number used in DOC and offender records.
Umatilla County Jail vs State Prison
Most wrong searches happen because the custody system is unclear. The county jail roster covers local custody. Oregon DOC covers sentenced state custody. Federal BOP and ICE cover separate federal systems. A person can move from one system to another after court, sentencing, transfer, or release.
| Custody Type | Where to Search | What It Covers |
|---|---|---|
| County jail | Citizen RIMS Incarcerated People | Current Umatilla County jail custody |
| State prison | Oregon Offender Search | Sentenced DOC adults in custody at EOCI, TRCI, or elsewhere |
| Federal prison | BOP Inmate Locator | Federal inmates from 1982 to present |
| Immigration detention | ICE detainee locator | Separate immigration detention searches |
Umatilla County Records Request Fallback
When the roster is not enough, use the Umatilla County JustFOIA public records portal. The portal accepts sheriff's office records and other county records. It offers New Request, Search Archive, and Track Status. For a jail record, include the person's full name, approximate booking date, booking number if known, and the specific record requested.
For court case records after a jail arrest, use Oregon Judicial Department tools or the Umatilla and Morrow Circuit Court records page. Court records are different from jail booking records. A booking record can list arrest charges before the prosecutor files formal court charges.
The official county jail page is shown in this Umatilla County Corrections Facility source page screenshot.
The screenshot matches the jail statistics and facility contact details used for the local population figures above.
Umatilla County Detention Facilities
The Umatilla County inmate population is spread across one sheriff-operated local jail and two DOC prisons. Facility type controls the correct lookup path, visiting rules, mail rules, and records request route.
- Umatilla County Corrections Facility holds local adults in custody before trial, on local sentences, warrants, holds, and transports.
- Eastern Oregon Correctional Institution is a DOC state prison in Pendleton for sentenced adults in custody.
- Two Rivers Correctional Institution is a DOC state prison in Umatilla with medium and minimum units.
Umatilla County Inmate Population FAQ
How large is the Umatilla County inmate population? The county jail reported a 2024 average daily population of 175 adults in custody, while DOC reported 1,379 adults at EOCI and 1,368 combined at TRCI/TRCM on May 1, 2026.
Where should a current jail search start? Start with Citizen RIMS Incarcerated People. It is the sheriff's current jail roster and is separate from the recent-arrests feed.
Why is a sentenced person not on the county roster? Once a person moves to Oregon DOC custody after sentencing, Oregon Offender Search becomes the correct system.
Are booking photos shown? No routine public mugshots were enabled in the inspected Umatilla Citizen RIMS configuration. Oregon law also limits booking-photo release.