Union County

Also known as Union County, Indiana, Union County, IN

county in Indiana, United States

Key facts

Country: United States
State: Indiana
Founded: January 5, 1821 (created), February 1, 1821 (organized)
Seat: Liberty
Largest town: Liberty
Total: 165.18 sq mi (427.8 km )
Land: 161.22 sq mi (417.6 km )
Water: 3.95 sq mi (10.2 km ) 2.39%
Estimate 2025: 6,863
Density: 43.96/sq mi (16.97/km )
Time zone: UTC−5 ( Eastern )
Summer dst: UTC−4 ( EDT )
Congressional district

Article

Union County is a county in the U.S. state of Indiana. As of the 2020 United States census, the population was 7,087. The county seat is Liberty. Since 2018, Union County has been included in the Cincinnati-Middletown, OH-KY-IN Metropolitan Statistical Area. It is located on the Indiana-Ohio border.

History