8 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Lawrenceburg | 1 | 12,224 | 11,638 | 0.97% | 965 | 12.66 | City |
| Loretto | 2 | 1,846 | 1,736 | 1.21% | 488 | 3.78 | City |
| St. Joseph | 3 | 839 | 789 | 1.21% | 223 | 3.77 | City |
| Ethridge | 4 | 573 | 533 | 1.42% | 497 | 1.15 | Town |
| Summertown | 5 | 510 | 521 | -4.49% | 254 | 2.01 | CDP |
| Westpoint | 6 | 308 | 151 | 7.32% | 344 | 0.90 | CDP |
| Leoma | 7 | 300 | 477 | 7.14% | 158 | 1.90 | CDP |
| Iron City | 8 | 234 | 94 | 7.34% | 339 | 0.69 | CDP |
Lawrenceburg is the largest city in Lawrence County, with a population of 12,224.
Iron City is the smallest city in Lawrence County.
There are 8 cities in Lawrence County, Tennessee.