| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Livingston | 1 | 5,329 | 5,728 | -1.06% | 610 | 9 | Town |
| Onalaska | 2 | 3,346 | 3,076 | 1.73% | 615 | 5 | City |
| Corrigan | 3 | 1,337 | 1,476 | -1.55% | 582 | 2 | Town |
| Goodrich | 4 | 278 | 250 | 1.83% | 394 | 1 | City |
| Seven Oaks | 5 | 74 | 68 | 1.37% | 53 | 1 | City |
Livingston is the largest city in Polk County, with a population of 5,329.
Seven Oaks is the smallest city in Polk County, with a population of 74.
There are 5 cities in Polk County, Texas.