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.
Island County, Washington, has about 86,000 residents (2024 Census Bureau estimate). A person kept in custody after an arrest in Island County is held at the county jail, run by the Island 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: Island County public records, Island County arrest records, Island County warrants, Island County criminal records, Island County court records, Washington arrest records and Washington inmate search.
Finding Someone in Custody in Island County
The county jail, run by the Island County Sheriff's Office, holds everyone kept in custody after an arrest in Island County, from every agency.
SearchSystems opened and checked the custody page of the Island County Sheriff's Office at islandcounty.net/sheriff (page title: Island County Jail, WA Inmate Roster Locator, Visitations, Sheriff), a site that blocks automated checks (HTTP 403), so open it in a browser.
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 Island County Jail by the Numbers
On an average day in 2021 the jail held about 40 people, down from about 61 in 2019. Its rated capacity in 2019, the last year with a capacity figure, was 62 beds, and it ran at 99 percent of it that year. The figures are from the Vera Institute of Justice's Incarceration Trends data.
Island County has about 86,000 residents (2024 Census Bureau estimate), so the jail holds about 5 people for every 10,000 residents.
Who Books People Into the Island County Jail
The Island County Sheriff's Office and the agencies that report for Oak Harbor and Langley make the arrests that end in a booking in Island County.
The largest arrest counts reported to the FBI were Oak Harbor's 598 for 2025, the Island County Sheriff's Office's 416 for 2025 and Langley's 3 for 2025.
Together, the three agencies in Island County with all twelve months of 2025 on file reported 1,017 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 Island 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 Washington State Department of Corrections lists its inmates at doc.wa.gov/records/incarcerated-data-search/incarcerated-search.
Frequently Asked Questions
How do I find an inmate in Island County?
Look on the custody page of the Island County Sheriff's Office at islandcounty.net/sheriff. It covers people booked into the county jail.
How many people are in the Island County jail?
About 40 on an average day in 2021, the latest year in the Vera Institute's jail data, against a rated capacity of 62 beds.
Where do people sentenced to prison in Island County go?
To a facility of the Washington State Department of Corrections; its inmate locator is at doc.wa.gov.
Is this the official Island 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.