Union County is named for the union of parts of Delaware, Franklin, Madison and Logan Counties to form Union County in 1820.
Created: April 1, 1820
County Seat:
Marysville 1821 – present
County Courthouse – Marysville
Location: 215 West 5th Street / South Court Street
Built: 1880 – 1883
Style: Renaissance
Architect: David W Gibbs of Toledo
Contractor: Karst & Woodruff
Description: The building faces north and is a two story red colored brick and stone structure. The building is located on landscaped grounds and constructed with cut Berea stone. The north front has a portico supported by four thin columns with balcony on the second story with arched doorway. Above is a white colored pediment. There is a mansard roof with square clock tower rising another three stories. There are galvanized iron trimmings. The courtroom is located on the second story. The building was renovated and restored in 1994. The architect was Wright-Miller Associates. On the west side is the modern three story red colored brick Justice Center constructed in 2000 to 2001. The architect was Meacham & Apel Architects Inc. and the contractor was Weithman Brothers Inc.
See: The architect David W Gibb designed courthouses in Fayette County, Henry County, Marion County.
Note: The first courthouse was built in Milford Center in 1820 and the previous courthouse was built in Marysville in 1838.
Courthouses:
N – Hardin County and Marion County
E – Marion County, Delaware County and Franklin County
S – Madison County
W – Champaign County and Logan County

County Courthouse



















Old Jail Door



Photos taken 2006, 2015 and 2018