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 October 4, 2026.
Lansdowne, Pennsylvania, in Delaware County, has about 11,000 residents (2024 Census Bureau estimate). A person kept in custody after an arrest in Lansdowne is held at the county jail, run by the Sheriff's Office | Delaware County, Pennsylvania, 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: Lansdowne public records, Delaware County inmate search, Lansdowne arrest records, Lansdowne warrants, Lansdowne property records, Pennsylvania arrest records and Pennsylvania inmate search.
Finding Someone in Custody in Lansdowne
A person kept in custody after an arrest in Lansdowne is held at the county jail, run by the Sheriff's Office | Delaware County, Pennsylvania, whichever agency made the arrest.
SearchSystems opened and checked the jail page of the Sheriff's Office | Delaware County, Pennsylvania at delcopa.gov/sheriff (page title: Sheriff's Office | Delaware County, Pennsylvania), phone 610-891-4296, 201 W. Front St. Media, PA 19063, which answered when SearchSystems opened it on October 4, 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 610-891-4296.
The Delaware County Jail by the Numbers
On an average day in 2023 the jail held about 1,250 people, down from about 1,830 in 2019. Its rated capacity in 2023 was 1,883 beds, and it ran at 66 percent of it that year. The figures are from the Vera Institute of Justice's Incarceration Trends data.
Delaware County has about 585,000 residents (2024 Census Bureau estimate), so the jail holds about 21 people for every 10,000 residents.
Who Books People Into the Delaware County Jail
The Sheriff's Office | Delaware County, Pennsylvania and the agency that reports for Lansdowne (filed by the FBI as Lansdowne Police Department) make the arrests that end in a booking in and around Lansdowne.
The FBI's agency list also places three state agencies, three other agencies, three campus police departments and one state police unit in Delaware County (the arrest records guide names each one).
The largest arrest counts reported to the FBI were Upper Darby Township's 1,402 for 2025, Chester's 845 for 2025 and Ridley Township's 522 for 2025.
Together, the 27 agencies in Delaware County with all twelve months of 2024 on file reported 4,475 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 Lansdowne 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 Delaware 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 Lansdowne?
Ask the Sheriff's Office | Delaware County, Pennsylvania at 610-891-4296; its jail page SearchSystems verified is at delcopa.gov/sheriff.
How many people are in the Delaware County jail?
About 1,250 on an average day in 2023, the latest year in the Vera Institute's jail data, against a rated capacity of 1,883 beds.
What is the phone number for the Delaware County jail?
610-891-4296, the number on the page of the Sheriff's Office | Delaware County, Pennsylvania SearchSystems verified.
Where do people sentenced to prison in Delaware County go?
To a facility of the Pennsylvania Department of Corrections; its inmate locator is at inmatelocator.cor.pa.gov.
Is this the official Lansdowne 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.