Union County's 2026 population is estimated at 3,834, reflecting a -1.19% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Union County is the 30th largest county in New Mexico. The 2010 population was 4,541 and has grown -15.57% since 2010.
Data after 2023 is projected based on recent change
Overall: 42.6 years
Female: 45.1 years
Male: 41.7 years
There are 3,157 adults, (916 of whom are seniors) in Union County.
Female: 1,832 (45.7%)
Male: 2,181 (54.3%)
The racial composition of Union County includes 63.77% White, 5.11% other race, 3.61% Native American, and smaller percentages for Black or African American and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 2,559 | 63.77% |
| Two or more races | 1,061 | 26.44% |
| Other race | 205 | 5.11% |
| Native American | 145 | 3.61% |
| Black or African American | 43 | 1.07% |
Union County 's average per capita income is $34,483. Household income levels show a median of $46,694. The poverty rate stands at 16.58%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $79,722 | - |
| Families | $63,287 | $128,620 |
| Households | $46,694 | $101,202 |
| Non Families | $22,788 | $57,263 |
Average Income
Median Household Income
Poverty Rate