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 25, 2026 and September 30, 2026.
Delaware County, Oklahoma, has about 42,000 residents (2024 Census Bureau estimate). A person kept in custody after an arrest in Delaware County is held at the county jail, run by the Delaware 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: Delaware County public records, Delaware County arrest records, Delaware County warrants, Delaware County criminal records, Delaware County court records, Oklahoma arrest records and Oklahoma inmate search.
Finding Someone in Custody in Delaware County
A person kept in custody after an arrest in Delaware County is held at the county jail, run by the Delaware County Sheriff's Office, whichever agency made the arrest.
SearchSystems opened and checked the custody page of the Delaware County Sheriff's Office at delcosheriff.org/inmate-search (page title: Inmate Search | Delaware County Sheriff's Office), phone 877-654-8463, which answered when SearchSystems opened it on September 28, 2026.
Someone booked recently shows on that page; someone cited and released at the scene, or held a few hours at a city station, does not.
The Delaware County Jail by the Numbers
On an average day in 2023 the jail held about 82 people, down from about 100 in 2019. Its rated capacity in 2019, the last year with a capacity figure, was 61 beds, and it ran at 164 percent of it that year. The figures are from the Vera Institute of Justice's Incarceration Trends data.
Delaware County has about 42,000 residents (2024 Census Bureau estimate), so the jail holds about 20 people for every 10,000 residents.
Who Books People Into the Delaware County Jail
The Delaware County Sheriff's Office and the agencies that report for Grove, Jay, West Siloam Springs, Colcord, Kansas and Bernice make the arrests that end in a booking in Delaware County.
The Vinita Police Department is listed by the FBI across two counties including Delaware County, so its arrests are not broken out for Delaware County here.
The largest arrest counts reported to the FBI were the Delaware County Sheriff's Office's 249 for 2025, Grove's 118 for 2025 and West Siloam Springs's 86 for 2025.
Together, the seven agencies in Delaware County with all twelve months of 2025 on file reported 511 arrests to the FBI that year. 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 Delaware 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 Oklahoma Department of Corrections lists its inmates at okoffender.doc.ok.gov.
Frequently Asked Questions
How do I find an inmate in Delaware County?
Look on the custody page of the Delaware County Sheriff's Office at delcosheriff.org/inmate-search, or call 877-654-8463. It covers people booked into the county jail.
How many people are in the Delaware County jail?
About 82 on an average day in 2023, the latest year in the Vera Institute's jail data, against a rated capacity of 61 beds.
What is the phone number for the Delaware County jail?
877-654-8463, the number on the page of the Delaware County Sheriff's Office SearchSystems verified.
Where do people sentenced to prison in Delaware County go?
To a facility of the Oklahoma Department of Corrections; its inmate locator is at okoffender.doc.ok.gov.
Is this the official Delaware 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.