2 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Fort Stockton | 1 | 8,066 | 8,471 | -0.99% | 1,454 | 6 | City |
| Iraan | 2 | 1,003 | 1,057 | -1.08% | 1,626 | 1 | City |
Fort Stockton is the largest city in Pecos County, with a population of 8,066.
Iraan is the smallest city in Pecos County, with a population of 1,003.
There are 2 cities in Pecos County, Texas.