9 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Savannah | 1 | 7,376 | 7,213 | 0.45% | 1,081 | 6.82 | City |
| Olivet | 2 | 1,305 | 1,599 | -0.23% | 219 | 5.96 | CDP |
| Crump | 3 | 939 | 904 | 0.75% | 185 | 5.08 | City |
| Counce | 4 | 495 | 405 | 7.14% | 327 | 1.51 | CDP |
| Saltillo | 5 | 428 | 418 | 0.47% | 139 | 3.07 | Town |
| Nixon | 6 | 357 | 249 | 6.89% | 202 | 1.76 | CDP |
| Morris Chapel | 7 | 261 | 77 | 6.97% | 99 | 2.62 | CDP |
| Walnut Grove | 8 | 212 | 215 | -5.36% | 37 | 5.76 | CDP |
| Shiloh | 9 | 188 | 204 | 7.43% | 126 | 1.50 | CDP |
Savannah is the largest city in Hardin County, with a population of 7,376.
Shiloh is the smallest city in Hardin County.
There are 9 cities in Hardin County, Tennessee.