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.
Sweetwater County, Wyoming, has about 41,000 residents (2024 Census Bureau estimate). A person kept in custody after an arrest in Sweetwater County is held at the county jail, run by the Sweetwater 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: Sweetwater County public records, Sweetwater County arrest records, Sweetwater County warrants, Sweetwater County criminal records, Sweetwater County court records, Wyoming arrest records and Wyoming inmate search.
Finding Someone in Custody in Sweetwater County
The county jail, run by the Sweetwater County Sheriff's Office, holds everyone kept in custody after an arrest in Sweetwater County, from every agency.
SearchSystems opened and checked the jail page of the Sweetwater County Sheriff's Office at sweetwatercountywy.gov/departments/sheriff/detention.php (page title: Sheriff's Office), phone (307) 352-4911, 50140, 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) 352-4911.
The Sweetwater County Jail by the Numbers
On an average day in 2022 the jail held about 81 people, down from about 110 in 2019. Its rated capacity in 2019, the last year with a capacity figure, was 333 beds, and it ran at 34 percent of it that year. The figures are from the Vera Institute of Justice's Incarceration Trends data.
Sweetwater County has about 41,000 residents (2024 Census Bureau estimate), so the jail holds about 20 people for every 10,000 residents.
Who Books People Into the Sweetwater County Jail
The Sweetwater County Sheriff's Office and the agencies that report for Rock Springs and Green River make the arrests that end in a booking in Sweetwater County.
The largest arrest counts reported to the FBI were Rock Springs's 494 for 2025, Green River's 168 for 2025 and the Sweetwater County Sheriff's Office's 160 for 2025.
Together, the three agencies in Sweetwater County with all twelve months of 2025 on file reported 822 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 Sweetwater 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 Sweetwater County serves the sentence in a facility of the Wyoming Department of Corrections, whose inmate locator is at wdoc-loc.wyo.gov.
Frequently Asked Questions
How do I find an inmate in Sweetwater County?
Ask the Sweetwater County Sheriff's Office at (307) 352-4911; its jail page SearchSystems verified is at sweetwatercountywy.gov.
How many people are in the Sweetwater County jail?
About 81 on an average day in 2022, the latest year in the Vera Institute's jail data, against a rated capacity of 333 beds.
What is the phone number for the Sweetwater County jail?
(307) 352-4911, the number on the page of the Sweetwater County Sheriff's Office SearchSystems verified.
Where do people sentenced to prison in Sweetwater County go?
To a facility of the Wyoming Department of Corrections; its inmate locator is at wdoc-loc.wyo.gov.
Is this the official Sweetwater 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.