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 September 26, 2026.
Gillette, Wyoming, in Campbell County, has about 34,000 residents (2024 Census Bureau estimate). A person kept in custody after an arrest in Gillette is held at the county jail, run by the Campbell 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: Gillette public records, Campbell County inmate search, Gillette arrest records, Gillette warrants, Gillette police reports, Gillette property records, Wyoming arrest records and Wyoming inmate search.
Finding Someone in Custody in Gillette
A person kept in custody after an arrest in Gillette is held at the county jail, run by the Campbell County Sheriff's Office, whichever agency made the arrest.
SearchSystems opened and checked the jail page of the Campbell County Sheriff's Office at campbellcountywy.gov/187/Detention-Center (page title: Detention Center | Campbell County, WY), phone (307) 687-6138, 600 W. Boxelder Road Gillette, WY 82718, which answered when SearchSystems opened it on September 24, 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 (307) 687-6138.
The Campbell County Jail by the Numbers
On an average day in 2018 the jail held about 200 people. The figures are from the Vera Institute of Justice's Incarceration Trends data.
Campbell County has about 48,000 residents (2024 Census Bureau estimate), so the jail holds about 41 people for every 10,000 residents.
Who Books People Into the Campbell County Jail
The Campbell County Sheriff's Office and the agency that reports for Gillette (filed by the FBI as Gillette Police Department) make the arrests that end in a booking in and around Gillette.
The largest arrest counts reported to the FBI were Gillette's 1,717 for 2025 and the Campbell County Sheriff's Office's 379 for 2025.
Together, the two agencies in Campbell County with all twelve months of 2025 on file reported 2,096 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 Gillette arrest records.
From the Jail to State Prison
A sentence of more than a year is served in state prison, not the jail; the Wyoming Department of Corrections lists its inmates at wdoc-loc.wyo.gov.
Frequently Asked Questions
How do I find an inmate in Gillette?
Ask the Campbell County Sheriff's Office at (307) 687-6138; its jail page SearchSystems verified is at campbellcountywy.gov/187/Detention-Center.
How many people are in the Campbell County jail?
About 200 on an average day in 2018, the latest year in the Vera Institute's jail data.
What is the phone number for the Campbell County jail?
(307) 687-6138, the number on the page of the Campbell County Sheriff's Office SearchSystems verified.
Where do people sentenced to prison in Campbell County go?
To a facility of the Wyoming Department of Corrections; its inmate locator is at wdoc-loc.wyo.gov.
Is this the official Gillette website?
No. SearchSystems.net is an independent public records guide, online since 1997. It links to the official city, county, court and state offices described above and does not hold records, charge for them or take requests.