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 23, 2026 and September 28, 2026.
Montgomery County, Pennsylvania, has about 879,000 residents (2024 Census Bureau estimate). A person kept in custody after an arrest in Montgomery County is held at the county jail, run by the Montgomery 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: Montgomery County public records, Montgomery County arrest records, Montgomery County warrants, Montgomery County criminal records, Montgomery County court records, Pennsylvania arrest records and Pennsylvania inmate search.
Finding Someone in Custody in Montgomery County
A person kept in custody after an arrest in Montgomery County is held at the county jail, run by the Montgomery County Sheriff's Office, whichever agency made the arrest.
SearchSystems opened and checked the custody page of the Montgomery County Sheriff's Office at mcsojail.countygovservices.com/Home/CurrentInmates (page title: Current Inmates | Montgomery County Sheriff's Office), which answered when SearchSystems opened it on September 28, 2026.
Someone booked recently shows on that page; someone cited and released at the scene, or held a few hours at a city station, does not.
The Montgomery County Jail by the Numbers
On an average day in 2024 the jail held about 940 people, down from about 1,580 in 2019. Its rated capacity in 2023, the last year with a capacity figure, was 2,080 beds, and it ran at 43 percent of it that year. The figures are from the Vera Institute of Justice's Incarceration Trends data.
Montgomery County has about 879,000 residents (2024 Census Bureau estimate), so the jail holds about 11 people for every 10,000 residents.
Who Books People Into the Montgomery County Jail
The Montgomery County Sheriff's Office and the agencies that report for Norristown, Pottstown, Lansdale, Conshohocken, Hatboro, Souderton and 13 more cities make the arrests that end in a booking in Montgomery County.
The FBI's agency list also places four state agencies, one campus police department, two other agencies and one state police unit in Montgomery County (the arrest records guide names each one).
The largest arrest counts reported to the FBI were Pottstown's 1,837 for 2025, Plymouth Township's 1,371 for 2025 and Abington Township's 1,171 for 2025.
Together, the 39 agencies in Montgomery County with all twelve months of 2025 on file reported 11,275 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 Montgomery 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 Montgomery 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 Montgomery County?
Look on the custody page of the Montgomery County Sheriff's Office at mcsojail.countygovservices.com. It covers people booked into the county jail.
How many people are in the Montgomery County jail?
About 940 on an average day in 2024, the latest year in the Vera Institute's jail data, against a rated capacity of 2,080 beds.
Where do people sentenced to prison in Montgomery County go?
To a facility of the Pennsylvania Department of Corrections; its inmate locator is at inmatelocator.cor.pa.gov.
Is this the official Montgomery 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.