Harrisburg is a city in and the county seat of Saline County, Illinois, United States. It is located about 57 miles (92 km) southwest of Evansville, Indiana, 111 miles (179 km) southeast of St. Louis, Missouri. The population was 9,860 at the 2000 census. Harrisburg is included in the Illinois-Indiana-Kentucky Tri-State Area and is the principal city in the Harrisburg Micropolitan Statistical Area with a combined population of 24,913.
- Harrisburg, Illinois on Wikipedia