THE DOÑA ANA COUNTY LAND BRIEF
Land in the
Chihuahuan Basins and Playas setting.
Doña Ana County has 3,808.2 square miles of land in New Mexico. 7 mapped landscape regions meet across Doña Ana County: Chihuahuan Basins and Playas, Low Mountains and Bajadas, Rio Grande Floodplain, among others.
Desert basins and mountain ranges extend across this region, with the Rio Grande and Pecos as important drainage corridors. Arid shrubland and grassland contrast with wooded higher elevations.
Regional context: Chihuahuan Deserts ↗ · Regional mapping across the county footprint
Where the landscape changes
Doña Ana County intersects 7 mapped regional units. The largest mapped shares are:
- Chihuahuan Basins and Playas56.9%
- Low Mountains and Bajadas30.6%
- Rio Grande Floodplain6.3%
- Chihuahuan Montane Woodlands4.3%
- Gypsiferous Dunes0.9%
Finding your parcel within Doña Ana County
The atlas lists 30 cities, towns, townships, and Census communities associated with Doña Ana County, including Las Cruces, Chaparral, Sunland Park. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Doña Ana County by land and water
The Census records 6.79 square miles of water within Doña Ana County, or 0.2% of its total area. That share is close to Doña Ana County’s 0.2%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Doña Ana County has 1,439.8 times the land area of nearby San Ysidro CDP (2.65 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Luna County, Otero County, Sierra County within New Mexico. A tract near one of these lines should be matched to the county identifier on its own records.

