How many people live in Dona Ana County, NM?
Updated Apr. 6, 2026Refreshed annually
In 2024, there were about 229,400 people living in Dona Ana County, NM. That makes Dona Ana County the second-most populous county in New Mexico. It is home to 10.8% of people living in the state.
229K
population of Dona Ana County, NM (2024)
10.8%
County share of the New Mexico population (2024)
About 229,400 people lived in Dona Ana County, NM in 2024.
Population estimates, 2000–2024
What are Dona Ana County, NM’s age demographics?
About 40,500 Dona Ana County residents are aged 65 and older in 2024. That represents 17.6% of its population. For comparison, the age group represents 20.3% of New Mexico’s population and 18% in the US overall.
Another 51,100 Dona Ana County residents, or 22.3% of the population, were children under 18. For comparison, the age group represents 21.2% of New Mexico’s population and 21.6% in the US overall.
A higher share of Dona Ana County, NM's population is aged 18–24 than the US as a whole.
Population estimates by age group, (2024)
What are Dona Ana County, NM’s racial and ethnic demographics?
Hispanic residents make up 68.5% of the Dona Ana County, NM population, higher than the national share of 20%. Dona Ana County, NM also has a larger share of people identifying as non-Hispanic American Indian and Alaska Native (0.78%) than the US overall (0.72%).
In contrast, Dona Ana County’s non-Hispanic white population accounts for 26.3%, below the 57.5% nationwide, and the non-Hispanic Black or African American population makes up 1.9% of the county, compared with 12.6% nationally.
Racial and ethnic make up differ based on location. These figures reflect how people identified their race alone (not in combination with other races), and separate out Hispanic or Latino ethnicity, following Census reporting standards.
Dona Ana County, NM has a higher share of a Hispanic population than New Mexico as a whole.
Population estimates by race and ethnicity, (2024)
The largest city or town in Dona Ana County, NM is Las Cruces with about 117,000 residents in 2024.
Cities and towns in Dona Ana County, NM ranked by population
Population (2024), includes only portions within county
| City or town | Population | |
|---|---|---|
| 1. | Las Cruces | 116,998 |
| 2. | Sunland Park | 18,185 |
| 3. | Anthony | 8,910 |
| 4. | Mesilla | 1,828 |
| 5. | Hatch | 1,590 |
| 6. | Balance of Doña Ana County | 81,855 |
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Methodology
USAFacts standardizes data, in areas such as time and demographics, to make it easier to understand and compare.
The analysis was generated with the help of AI and reviewed by USAFacts for accuracy.
Page sources
USAFacts endeavors to share the most up-to-date information available. We sourced the data on this page directly from government agencies; however, the intervals at which agencies publish updated data vary.
