Founded in 1817, Marion County is one of 95 counties in the state of Tennessee. Historically, Marion County was formed from Indian lands. The city of Jasper is the county seat. With FIPS code of 115, Marion County has a population of 28,877 and area of 500 square miles (1,295 km2).
List of all cities in Marion County, TN alphabetically
| City/Town | Postal Code | Area Code |
| Guild, TN | 37340 | 423 |
| Jasper, TN | 37347 | 423 |
| Kimball, TN | 37347 | 423 |
| Sequatchie, TN | 37374 | 423 |
| South Pittsburg, TN | 37380 | 423 |
| Whiteside, TN | 37396 | 423 |