5 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Las Cruces | 1 | 119,636 | 111,721 | 1.11% | 1,555 | 77 | City |
| Sunland Park | 2 | 18,877 | 16,800 | 1.87% | 1,281 | 15 | City |
| Anthony | 3 | 9,007 | 8,716 | 0.55% | 3,337 | 3 | City |
| Mesilla | 4 | 1,840 | 1,803 | 0.33% | 324 | 6 | Town |
| Hatch | 5 | 1,611 | 1,547 | 0.69% | 536 | 3 | Village |
Las Cruces is the largest city in Doña Ana County, with a population of 119,636.
Hatch is the smallest city in Doña Ana County, with a population of 1,611.
There are 5 cities in Doña Ana County, New Mexico.