6 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Wellington | 1 | 1,850 | 1,892 | -0.38% | 1,342 | 1 | City |
| Wellington | 2 | 1,850 | 1,884 | -0.38% | 1,342 | 1 | City |
| Dodson | 3 | 92 | 94 | -1.08% | 151 | 1 | Town |
| Dodson | 4 | 92 | 94 | -1.08% | 151 | 1 | Town |
| Samnorwood | 5 | 29 | 33 | 7.41% | 18 | 2 | CDP |
| Quail | 6 | 25 | 29 | 8.7% | 8 | 3 | CDP |
Wellington is the largest city in Collingsworth County, with a population of 1,850.
Quail is the smallest city in Collingsworth County, with a population of 25.
There are 6 cities in Collingsworth County, Texas.