Johnson County
Also known as Johnson County, Indiana, Johnson County, IN
county in Indiana, United States
Key facts
- Country
- United States
- State
- Indiana
- Seat
- Franklin
- Largest city
- Greenwood
- Total
- 321.79 sq mi (833.4 km )
- Land
- 320.43 sq mi (829.9 km )
- Water
- 1.36 sq mi (3.5 km ) 0.42%
- Estimate 2025
- 174,262
- Density
- 504.84/sq mi (194.92/km )
- Time zone
- UTC−5 ( Eastern )
- Summer dst
- UTC−4 ( EDT )
- Congressional district
- 6th
- Website
- www .co .johnson .in .us
Article
Johnson County is a county located in the U.S. state of Indiana. As of 2020, the population was 161,765. The county seat is Franklin. Johnson County is included in the Indianapolis-Carmel-Anderson, IN Metropolitan Statistical Area.
Transportation