3 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Alamosa | 1 | 9,929 | 9,812 | 0.23% | 1,247 | 8 | City |
| Alamosa East | 2 | 1,284 | 987 | -0.93% | 395 | 3 | CDP |
| Hooper | 3 | 76 | 78 | -1.3% | 302 | 0 | Town |
Alamosa is the largest city in Alamosa County, with a population of 9,929.
Hooper is the smallest city in Alamosa County, with a population of 76.
There are 3 cities in Alamosa County, Colorado.