2 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Fort Stockton | 1 | 7,985 | 8,471 | -1% | 1,439 | 6 | City |
| Iraan | 2 | 992 | 1,057 | -1.1% | 1,608 | 1 | City |
Fort Stockton is the largest city in Pecos County, with a population of 7,985.
Iraan is the smallest city in Pecos County, with a population of 992.
There are 2 cities in Pecos County, Texas.