Founded on November 16, 1833, Johnson County is one of 75 counties in the state of Arkansas. Historically, Johnson County was formed from Pope County, and a small portion from Madison County (prior 1890). The city of Clarksville is the county seat. With FIPS code of 71, Johnson County has a population of 25,845 and area of 682.74 square miles (1,768 km2).
List of all cities in Johnson County, AR alphabetically
| City/Town | Postal Code | Area Code |
| Clarksville, AR | 72830 | 479 |
| Coal Hill, AR | 72832 | 479 |
| Hagarville, AR | 72839 | 479 |
| Hartman, AR | 72840 | 479 |
| Hunt, AR | 72840 | 479 |
| Knoxville, AR | 72845 | 479 |
| Lamar, AR | 72846 | 479 |
| Oark, AR | 72852 | 479 |
| Ozone, AR | 72854 | 479 |
Map of Cities in Johnson County, AR
