9 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Dayton | 1 | 10,265 | 8,835 | 2.87% | 335 | 30.66 | City |
| Cleveland | 2 | 10,179 | 7,514 | 5.53% | 541 | 18.80 | City |
| Liberty | 3 | 9,088 | 8,302 | 1.76% | 204 | 44.52 | City |
| Plum Grove | 4 | 1,694 | 1,261 | 5.41% | 467 | 3.63 | City |
| Daisetta | 5 | 1,218 | 935 | 4.91% | 823 | 1.48 | City |
| Hardin | 6 | 894 | 776 | 2.76% | 345 | 2.59 | City |
| Devers | 7 | 479 | 366 | 5.04% | 258 | 1.86 | City |
| North Cleveland | 8 | 306 | 230 | 5.15% | 162 | 1.89 | City |
| Hull | 9 | 245 | 642 | -10.58% | 123 | 1.99 | CDP |
Dayton is the largest city in Liberty County, with a population of 10,265.
Hull is the smallest city in Liberty County.
There are 9 cities in Liberty County, Texas.