7 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Rockport | 1 | 11,444 | 10,156 | 2.31% | 692 | 16.55 | City |
| Lamar | 2 | 1,790 | 1,073 | 4.5% | 585 | 3.06 | CDP |
| Fulton | 3 | 1,636 | 1,525 | 1.36% | 1,164 | 1.41 | Town |
| Taft Southwest | 4 | 1,470 | 1,440 | 0.07% | 2,843 | 0.52 | CDP |
| Tradewinds | 5 | 389 | 106 | 3.73% | 359 | 1.08 | CDP |
| Holiday Beach | 6 | 235 | 374 | -7.48% | 146 | 1.61 | CDP |
| Falman | 7 | 19 | 8 | 5.56% | 241 | 0.08 | CDP |
Rockport is the largest city in Aransas County, with a population of 11,444.
Falman is the smallest city in Aransas County.
There are 7 cities in Aransas County, Texas.