Founded on Mar 7, 1803, Dearborn County is one of 92 counties in the state of Indiana. Historically, Dearborn County was formed from Clark County, IN and Hamilton County, OH. The city of Lawrenceburg is the county seat. With FIPS code of 29, Dearborn County has a population of 50,816 and area of 305 square miles (790 km2).
List of all cities in Dearborn County, IN alphabetically
| City/Town | Postal Code | Area Code |
| Aurora, IN | 47001 | 812 |
| Dillsboro, IN | 47018 | 812 |
| Dover, IN | 47022 | 812 |
| Elrod, IN | 47018 | 812 |
| Farmers Retreat, IN | 47018 | 812 |
| Greendale, IN | 47025 | 812 |
| Guilford, IN | 47022 | 812 |
| Lawrenceburg, IN | 47025 | 812 |
| Moores Hill, IN | 47032 | 812 |
| New Alsace, IN | 47022 | 812 |
| West Harrison, IN | 47060 | 812 |