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.
Union County, Pennsylvania, has about 42,000 residents (2024 Census Bureau estimate), and arrests there are reported to the FBI by the Union County Sheriff's Office, three city agencies and six campus, state or other agencies. An arrest leaves the same records whoever makes it: the arresting agency's report, the record of anyone held at the county jail, and, if the District Attorney files charges, a case in the Union County Court of Common Pleas. This guide says who keeps each one, what it costs and who may see it, with the arrest counts each agency reported.
This guide covers who makes arrests, how many arrests, booking and the jail, finding an arrest, copies, cities and common questions.
Related guides: Union County public records, Pennsylvania arrest records, Pennsylvania inmate search and Pennsylvania criminal records.
Who Makes Arrests in Union County
The Union County Sheriff's Office is the county agency that reports arrests to the FBI for Union County. It reported 0 arrests for 2025.
Arrests inside two of the county's cities are reported to the FBI by an agency of the city's own, listed here with the Census population and what each reported:
- Mifflinburg, 3,470 residents: 64 arrests reported for 2025.
- New Berlin, 778 residents: 8 arrests reported for 2025.
A city on that list is reported separately whether the officers are the city's own or the sheriff's under contract; the FBI's list does not say which.
The FBI's agency list also places these agencies in Union County: Bucknell University (campus police); the Union County State Police (state police); the Office of Attorney General Region 2 in Union County, the Bureau of Forestry in Union County, Forest Rangers's Bald Eagle State Forest District 7 and the State Park Rangers at Raymond B. Winter (state agency).
How Many Arrests Each Agency Reports in Union County
Each agency reports its arrests to the FBI by month, and the FBI publishes them on the Crime Data Explorer. These are the full-year totals, all offenses, as the FBI held them on October 8, 2026; a year with months missing or not reported is left out.
- Mifflinburg: 64 for 2025, 67 for 2024, 80 for 2023, 41 for 2022 and 41 for 2020; 2021 is missing months.
- New Berlin: 8 for 2025, 9 for 2024, 5 for 2023 and 4 for 2020; 2021 and 2022 are missing months.
- Union County Sheriff's Office: 0 for 2025, 0 for 2024, 1 for 2023 and 2 for 2020; 2021 and 2022 are missing months.
- Buffalo Valley Regional: 222 for 2023 and 166 for 2020; 2021 and 2022 are missing months.
Together, the three agencies with all twelve months of 2025 on file reported 72 arrests that year. The same agencies with both 2025 and 2024 complete reported 72 in 2025 against 76 in 2024, down 5.3 percent.
Through March 2026, the three agencies with every month so far on file reported 14 arrests, against 18 in the same months of 2025.
Buffalo Valley Regional reported only part of 2025 (11 months) and is left out of the totals.
Booking: Where People Arrested in Union County Are Held
The county jail is where a person arrested in Union County and kept in custody ends up, whichever agency made the arrest, though a city department may hold someone in its own cells first and a person cited and released at the scene is never booked. The jail's record of each person held, with the charges, is a public record of the arrest, and once the person is released or sentenced the record continues in the court file.
On an average day in 2023 the jail held about 46 people, up from about 28 in 2019. Its rated capacity in 2023 was 45 beds, and it ran at 102 percent of it that year. The figures are from the Vera Institute of Justice's Incarceration Trends data.
SearchSystems opened and checked the jail page of the Union County Sheriff's Office at unioncountypa.org/departments/sheriff/sheriff-s-office/page.aspx (page title: Sheriff's Office | Union County Commissioners), 103 S. Second Street Lewisburg, PA 17837, a site that blocks automated checks (HTTP 403), so open it in a browser.
A person sentenced to prison serves the sentence in a facility of the Pennsylvania Department of Corrections, whose inmate locator is at inmatelocator.cor.pa.gov.
How to Find Out About an Arrest in Union County
Whether someone was arrested in Union County, and what came of it, shows up in two places: the case index of the Union County Court of Common Pleas, which shows whether charges were filed and the next court date (the court records page SearchSystems verified is at ujsportal.pacourts.us/casesearch); the District Attorney, which decides whether an arrest becomes a charge (its page is at unioncountypa.org/district-attorney, phone (570) 524-8651).
Statewide, UJS Web Portal is the Pennsylvania courts' free statewide docket search.
Pennsylvania is one of the states that lets anyone look up another person's statewide criminal history: PATCH lets anyone request a criminal record check by name online, for $22 a search, through the Pennsylvania State Police. That record shows what agencies reported to the state, which is wider than one county's court index but can lag it.
Getting a Copy of an Arrest Record in Union County
The report of an arrest is released by the agency that made it; the jail and the court hold their own records of the same event, but not the report. Under the Right-to-Know Law the agency must answer within 5 business days, with a 30-day extension, and it may charge copying at 25 cents a page.
- An arrest by the Union County Sheriff's Office: ask its records unit.
- An arrest in Mifflinburg or New Berlin: the records unit of the agency that reports for that city.
- An arrest by Bucknell University, the Union County State Police or the Office of Attorney General Region 2 in Union County: the records office of the agency involved.
- A defendant who has been charged gets the report through the case: the District Attorney, (570) 524-8651, handles discovery for pending cases.
- The court file of a case that was filed: the Union County Court of Common Pleas, through the court records page at ujsportal.pacourts.us/casesearch.
- Your own statewide record: the same request described above, for your own name.
Cities in Union County: Who Reports the Arrests
The FBI lists a separate arrest reporting agency for two of the four cities in Union County: Mifflinburg and New Berlin. Lewisburg and Hartleton have no separate reporting agency in the FBI's list. The FBI's list also carries the Buffalo Valley Regional Police Department as a city agency in Union County; Buffalo Valley Regional is not among the cities above.
Wherever in the county the arrest happens, a person kept in custody goes to the county jail and the case goes to the Union County Court of Common Pleas.
SearchSystems has a guide to the offices of these cities in Union County, with the 2024 Census Bureau population; a city with its own arrest records guide opens there:
- Lewisburg (5,253)
Frequently Asked Questions
How many arrests are made in Union County each year?
Mifflinburg reported 64 arrests to the FBI for 2025, and the three agencies with every month of 2025 on file reported 72 between them.
Where are people arrested in Union County booked?
Those kept in custody go to the county jail, run by the Union County Sheriff's Office; a person cited and released at the scene is not booked.
Are arrest records public in Union County?
The court files of criminal cases are public, and so is the statewide criminal history kept by the Pennsylvania State Police: PATCH lets anyone request a criminal record check by name online, for $22. The arrest report itself is released by the agency that made the arrest, under the Right-to-Know Law.
How do I get a copy of an arrest report in Union County?
From the agency that made the arrest: the Union County Sheriff's Office for its own arrests, or the agency that reports for the city where it happened. Under the Right-to-Know Law the answer is due within 5 business days, with a 30-day extension.
Is this the official Union 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.