7 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Carrizo Springs | 1 | 4,472 | 4,861 | -1.71% | 1,447 | 3.09 | City |
| Carrizo Hill | 2 | 1,395 | 1,479 | 4.1% | 2,906 | 0.48 | CDP |
| Asherton | 3 | 672 | 717 | -1.32% | 823 | 0.82 | City |
| Big Wells | 4 | 448 | 480 | -1.32% | 807 | 0.56 | City |
| Chula Vista | 5 | 408 | 672 | -0.49% | 771 | 0.53 | CDP |
| Loma Grande | 6 | 236 | 318 | 3.96% | 3,471 | 0.07 | CDP |
| Catarina | 7 | 52 | 80 | -7.14% | 14 | 3.76 | CDP |
Carrizo Springs is the largest city in Dimmit County, with a population of 4,472.
Catarina is the smallest city in Dimmit County.
There are 7 cities in Dimmit County, Texas.