Johnson County, Indiana is located in the central part of the state. It sits just south of Indianapolis and is part of the Indianapolis-C Carmel-Anderson metropolitan area. The county seat is Franklin, and its largest population centers include Greenwood and Franklin, with other towns like Bargersville, Whiteland, New Whiteland, Trafalgar, and Edinburgh (partially) also in the county. The county is bordered by Marion County to the north, Shelby County to the east, Bartholomew County to the southeast, Brown County to the southwest, and Morgan County to the west. The area is served by major highways such as Interstate 65, U.S. Route 31, and various state roads (e.g., IN-37, IN-44, IN-135). If you need precise coordinates, the county is centered roughly around 39.49°N, 86.10°W, and the time zone is Eastern Time (ET).