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 24, 2026 and October 4, 2026.
Grant County, Oregon, has about 7,100 residents (2024 Census Bureau estimate). A person kept in custody after an arrest in Grant County is held at the county jail, run by the Grant County Sheriff's Office, and the jail's record of each person held is a public record. This guide says where to look for someone in custody, what the jail holds and who books people into it.
This guide covers the search, the jail, who books people, state prison and common questions.
Related guides: Grant County public records, Grant County arrest records, Grant County warrants, Grant County criminal records, Grant County court records, Oregon arrest records and Oregon inmate search.
Finding Someone in Custody in Grant County
A person kept in custody after an arrest in Grant County is held at the county jail, run by the Grant County Sheriff's Office, whichever agency made the arrest.
SearchSystems opened and checked the jail page of the Grant County Sheriff's Office at grantcountyoregon.net/265/Jail (page title: Jail | Grant County, OR), phone 541-575-1134, which answered when SearchSystems opened it on October 4, 2026.
That page is the office's jail information page rather than a roster, so a search for a particular person goes through the office at 541-575-1134.
The Grant County Jail by the Numbers
On an average day in 2023 the jail held about 8 people, down from about 17 in 2019. Its rated capacity in 2019, the last year with a capacity figure, was 40 beds, and it ran at 42 percent of it that year. The figures are from the Vera Institute of Justice's Incarceration Trends data.
Grant County has about 7,100 residents (2024 Census Bureau estimate), so the jail holds about 11 people for every 10,000 residents.
Who Books People Into the Grant County Jail
The Grant County Sheriff's Office makes the arrests that end in a booking in Grant County.
The FBI's agency list also places these agencies in Grant County: the Grant County Liquor Commission (state agency); the Grant County State Police (state police).
The Grant County Sheriff's Office reported 1,171 arrests to the FBI for 2025. Those kept in custody were booked into the county jail; a person cited and released at the scene was not.
The counts, agency by agency and year by year, are in Grant County arrest records.
From the Jail to State Prison
A sentence of more than a year is served in state prison, not the jail; the Oregon Department of Corrections lists its inmates at oregon.gov/doc/victim-services/pages/offender-search.aspx.
Frequently Asked Questions
How do I find an inmate in Grant County?
Ask the Grant County Sheriff's Office at 541-575-1134; its jail page SearchSystems verified is at grantcountyoregon.net/265/Jail.
How many people are in the Grant County jail?
About 8 on an average day in 2023, the latest year in the Vera Institute's jail data, against a rated capacity of 40 beds.
What is the phone number for the Grant County jail?
541-575-1134, the number on the page of the Grant County Sheriff's Office SearchSystems verified.
Where do people sentenced to prison in Grant County go?
To a facility of the Oregon Department of Corrections; its inmate locator is at oregon.gov.
Is this the official Grant 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.