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 23, 2026.
Butler County, Pennsylvania, has about 199,000 residents (2024 Census Bureau estimate). A person kept in custody after an arrest in Butler County is held at the county jail, run by the Butler 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: Butler County public records, Butler County arrest records, Butler County warrants, Butler County police reports, Butler County property records, Pennsylvania arrest records and Pennsylvania inmate search.
Finding Someone in Custody in Butler County
A person kept in custody after an arrest in Butler County is held at the county jail, run by the Butler County Sheriff's Office, whichever agency made the arrest.
SearchSystems opened and checked the jail page of the Butler County Sheriff's Office at butlersheriff.org/jail-facilities (page title: Jail Facilities | Butler County Sheriff’s Office), which answered when SearchSystems opened it on September 23, 2026.
That page is the office's jail information page rather than a roster.
The Butler County Jail by the Numbers
On an average day in 2023 the jail held about 440 people, up from about 260 in 2019. Its rated capacity in 2023 was 572 beds, and it ran at 77 percent of it that year. The figures are from the Vera Institute of Justice's Incarceration Trends data.
Butler County has about 199,000 residents (2024 Census Bureau estimate), so the jail holds about 22 people for every 10,000 residents.
Who Books People Into the Butler County Jail
The Butler County Sheriff's Office and the agencies that report for Butler (township), Butler, Zelienople, Slippery Rock, Evans City, Mars and four more cities make the arrests that end in a booking in Butler County.
The FBI's agency list also places two campus police departments, four state agencies, two other agencies and one state police unit in Butler County (the arrest records guide names each one).
The Northern Regional Police Department is listed by the FBI across two counties including Butler County, so its arrests are not broken out for Butler County here.
The largest arrest counts reported to the FBI were Butler's 569 for 2025, Cranberry Township's 459 for 2025 and Butler (township)'s 392 for 2025.
Together, the 15 agencies in Butler County with all twelve months of 2025 on file reported 1,645 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 Butler 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 Butler County serves the sentence in a facility of the Pennsylvania Department of Corrections, whose inmate locator is at inmatelocator.cor.pa.gov.
Frequently Asked Questions
How do I find an inmate in Butler County?
Ask the Butler County Sheriff's Office; its jail page SearchSystems verified is at butlersheriff.org/jail-facilities.
How many people are in the Butler County jail?
About 440 on an average day in 2023, the latest year in the Vera Institute's jail data, against a rated capacity of 572 beds.
Where do people sentenced to prison in Butler County go?
To a facility of the Pennsylvania Department of Corrections; its inmate locator is at inmatelocator.cor.pa.gov.
Is this the official Butler 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.