This is a private reference site, not a government office. It cannot confirm custody status, release anyone, post bond, schedule visits, send money, or retrieve official booking records. Contact the office that holds the record for official action.
Official Jail Contacts
Use the jail or sheriff records contacts based on the record needed. Current custody questions for Union County adult jail inmates usually start with Tri-County Regional Jail, while sheriff-created records and public-records requests route to Union County Sheriff Records.
Tri-County Regional Jail
4099 State Route 559
Mechanicsburg, OH 43044
Phone: 937-834-5000
Fax: 937-834-9975
Union County Sheriff'''s Office Records
221 West Fifth Street
Marysville, OH 43040
Email: sheriffpublicrecords@unioncountyohio.gov
Public-records phone: 937-645-4100 ext. 4468
Local background-check questions: 937-645-4103 ext. 4434
Local background-check hours: Monday-Friday, 8:00 AM-4:30 PM
Where to Look
Different Union County inmate and court questions go to different offices or pages:
- For someone in the county jail, start with jail inmate records and the Tri-County roster or jail phone line.
- For booking photos, use jail roster mugshots and the sheriff public-records request process.
- For charges filed after arrest, use court records after a jail arrest, the Union County Clerk, or Marysville Municipal Court.
- For sentenced state prisoners, use the Ohio Department of Rehabilitation and Correction offender search.
- For federal prisoners, use the BOP Inmate Locator. For immigration detention, use ICE ODLS or an ICE ERO contact if the locator does not return a match.
- For victim custody notifications, register through VINELink or call Ohio VINE at 800-770-0192.