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.
Lewis County, Idaho, has about 3,700 residents (2024 Census Bureau estimate). A person kept in custody after an arrest in Lewis County is held at the county jail, run by the Lewis 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: Lewis County public records, Lewis County arrest records, Lewis County warrants, Lewis County criminal records, Lewis County court records, Idaho arrest records and Idaho inmate search.
Finding Someone in Custody in Lewis County
A person kept in custody after an arrest in Lewis County is held at the county jail, run by the Lewis County Sheriff's Office, whichever agency made the arrest.
SearchSystems opened and checked the jail page of the Lewis County Sheriff's Office at lewiscountyid.us/Elected-Officials/Sheriff (page title: Lewis County Sheriff), which answered when SearchSystems opened it on October 4, 2026.
That page is the office's jail information page rather than a roster.
The Lewis County Jail by the Numbers
On an average day in 2019 the jail held about 10 people. Its rated capacity in 2019 was 13 beds, and it ran at 77 percent of it that year. The figures are from the Vera Institute of Justice's Incarceration Trends data.
Lewis County has about 3,700 residents (2024 Census Bureau estimate), so the jail holds about 27 people for every 10,000 residents.
Who Books People Into the Lewis County Jail
The Lewis County Sheriff's Office makes the arrests that end in a booking in Lewis County.
The Lewis County Sheriff's Office reported 13 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 Lewis 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 Idaho Department of Correction lists its inmates at idoc.idaho.gov/content/prisons/resident-client-search.
Frequently Asked Questions
How do I find an inmate in Lewis County?
Ask the Lewis County Sheriff's Office; its jail page SearchSystems verified is at lewiscountyid.us/Elected-Officials/Sheriff.
How many people are in the Lewis County jail?
About 10 on an average day in 2019, the latest year in the Vera Institute's jail data, against a rated capacity of 13 beds.
Where do people sentenced to prison in Lewis County go?
To a facility of the Idaho Department of Correction; its inmate locator is at idoc.idaho.gov.
Is this the official Lewis 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.