Founded on Dec 27, 1816, Jennings County is one of 92 counties in the state of Indiana. Historically, Jennings County was formed from Jackson and Jefferson Counties. The city of Vernon is the county seat. With FIPS code of 79, Jennings County has a population of 27,409 and area of 377 square miles (976 km2).
List of all cities in Jennings County, IN alphabetically
| City/Town | Postal Code | Area Code |
| Butlerville, IN | 47223 | 812 |
| Commiskey, IN | 47227 | 812 |
| Hayden, IN | 47245 | 812 |
| Muscatatuck, IN | 47223 | 812 |
| Nebraska, IN | 47223 | 812 |
| North Vernon, IN | 47265 | 812 |
| Paris Crossing, IN | 47270 | 812 |
| Queensville, IN | 47265 | 812 |
| Scipio, IN | 47273 | 812 |
| Vernon, IN | 47282 | 812 |