This is a private reference site, not a government office. We cannot confirm custody, release a person, post bond, or retrieve an official booking record. Contact the agency that holds the record for those services.
Choose the Correct Union Office
Union County adults in local jail custody are housed at Tri-County Regional Jail, while the Sheriff handles county arrest, transport, and public-record functions. No public lobby-record hours were verified for the jail, so call before traveling. The principal contacts are:
Tri-County Regional Jail4099 State Route 559
Mechanicsburg, OH 43044
937-834-5000 Union County Sheriff's Office, Records
221 West Fifth Street
Marysville, OH 43040
937-645-4100 ext. 4468
sheriffpublicrecords@unioncountyohio.gov Union County Clerk Legal Office
215 West Fifth Street
Marysville, OH 43040
937-645-3006
Monday through Friday, 8:30 a.m. to 4:00 p.m. Union County Adult Court Services and APA Unit
Mitchell Agricultural Center, Wing C
18000 U.S. Route 4 North, Marysville
Regular hours: 8:00 a.m. to 5:00 p.m.
Use the route that matches the question:
- For a released person or a discharge record, the home page gives the full lookup and request path.
- For post-release control, parole, or court probation, use Parole / Probation.
- For a same-day jail event, begin with Released Last 24 Hours and its official fallback chain.
- For a scheduled date or alert, use Inmate Release Date and VINELink Release Check.
- For a named facility or custody system, select its page from the facility list below.
- For a sentenced Ohio prisoner, search the ODRC offender locator.
- For a federal or immigration detainee, use the BOP or ICE locator that matches the custodian.