Founded on Dec 21, 1813, Washington County is one of 92 counties in the state of Indiana. Historically, Washington County was formed from Clark, Harrison and Knox Counties. The city of Salem is the county seat. With FIPS code of 175, Washington County has a population of 28,102 and area of 514 square miles (1,331 km2).
List of all cities in Washington County, IN alphabetically
| City/Town | Postal Code | Area Code |
| Campbellsburg, IN | 47108 | 812 |
| Fredericksburg, IN | 47120 | 812 |
| Hardinsburg, IN | 47125 | 812 |
| Little York, IN | 47139 | 812 |
| Livonia, IN | 47108 | 812 |
| Pekin, IN | 47165 | 812 |
| Rego, IN | 47125 | 812 |
| Salem, IN | 47167 | 812 |
| Valeene, IN | 47125 | 812 |