12 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Lawrenceburg | 1 | 12,231 | 11,635 | 0.98% | 966 | 13 | City |
| Lawrenceburg | 2 | 12,231 | 11,636 | 0.98% | 966 | 13 | City |
| Loretto | 3 | 1,832 | 1,736 | 1.05% | 484 | 4 | City |
| Loretto | 4 | 1,832 | 1,737 | 1.05% | 484 | 4 | City |
| St. Joseph | 5 | 827 | 790 | 0.85% | 220 | 4 | City |
| St. Joseph | 6 | 827 | 790 | 0.85% | 220 | 4 | City |
| Ethridge | 7 | 568 | 533 | 1.25% | 493 | 1 | Town |
| Ethridge | 8 | 568 | 533 | 1.25% | 493 | 1 | Town |
| Summertown | 9 | 510 | 521 | -4.49% | 254 | 2 | CDP |
| Westpoint | 10 | 308 | 151 | 7.32% | 344 | 1 | CDP |
| Leoma | 11 | 300 | 477 | 7.14% | 158 | 2 | CDP |
| Iron City | 12 | 234 | 94 | 7.34% | 339 | 1 | CDP |
Lawrenceburg is the largest city in Lawrence County, with a population of 12,231.
Iron City is the smallest city in Lawrence County, with a population of 234.
There are 12 cities in Lawrence County, Tennessee.