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 on September 24, 2026.
Boundary County, Idaho, has about 14,000 residents (2024 Census Bureau estimate). A person kept in custody after an arrest in Boundary County is held at the county jail, run by the Boundary 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: Boundary County public records, Boundary County arrest records, Boundary County warrants, Boundary County criminal records, Boundary County court records, Idaho arrest records and Idaho inmate search.
Finding Someone in Custody in Boundary County
The county jail, run by the Boundary County Sheriff's Office, holds everyone kept in custody after an arrest in Boundary County, from every agency.
SearchSystems opened and checked the jail page of the Boundary County Sheriff's Office at boundarysheriff.org/detention- (page title: Sheriff's Office Boundary County, ID), which answered when SearchSystems opened it on September 24, 2026.
That page is the office's jail information page rather than a roster.
The Boundary County Jail by the Numbers
On an average day in 2019 the jail held about 25 people. Its rated capacity in 2019 was 24 beds, and it ran at 104 percent of it that year. The figures are from the Vera Institute of Justice's Incarceration Trends data.
Boundary County has about 14,000 residents (2024 Census Bureau estimate), so the jail holds about 18 people for every 10,000 residents.
Who Books People Into the Boundary County Jail
The Boundary County Sheriff's Office and the agency that reports for Bonners Ferry make the arrests that end in a booking in Boundary County.
The largest arrest counts reported to the FBI were Bonners Ferry's 117 for 2024 and the Boundary County Sheriff's Office's 112 for 2025.
Together, the two agencies in Boundary County with all twelve months of 2023 on file reported 223 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 Boundary County arrest records.
From the Jail to State Prison
The jail holds people awaiting trial and people serving short sentences. A person sentenced to prison in Boundary County serves the sentence in a facility of the Idaho Department of Correction, whose inmate locator is at idoc.idaho.gov/content/prisons/resident-client-search.
Frequently Asked Questions
How do I find an inmate in Boundary County?
Ask the Boundary County Sheriff's Office; its jail page SearchSystems verified is at boundarysheriff.org/detention-.
How many people are in the Boundary County jail?
About 25 on an average day in 2019, the latest year in the Vera Institute's jail data, against a rated capacity of 24 beds.
Where do people sentenced to prison in Boundary County go?
To a facility of the Idaho Department of Correction; its inmate locator is at idoc.idaho.gov.
Is this the official Boundary 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.