| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Wellington | 1 | 1,755 | 1,886 | -0.85% | 1,273 | 1 | City |
| Dodson | 2 | 88 | 94 | -1.12% | 144 | 1 | Town |
Wellington is the largest city in Collingsworth County, with a population of 1,755.
Dodson is the smallest city in Collingsworth County, with a population of 88.
There are 2 cities in Collingsworth County, Texas.