Rio Arriba County's 2026 population is estimated at 40,023, reflecting a 0.09% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Rio Arriba County is the 13th largest county in New Mexico. The 2010 population was 40,286 and has grown -0.65% since 2010.
Data after 2023 is projected based on recent change
Overall: 42 years
Female: 43.5 years
Male: 40.7 years
There are 31,054 adults, (8,742 of whom are seniors) in Rio Arriba County.
Female: 20,280 (50.6%)
Male: 19,790 (49.4%)
The racial composition of Rio Arriba County includes 29.69% other race, 21.69% White, 16.97% Native American, and smaller percentages for Black or African American, Asian, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| Two or more races | 12,135 | 30.28% |
| Other race | 11,898 | 29.69% |
| White | 8,691 | 21.69% |
| Native American | 6,800 | 16.97% |
| Black or African American | 272 | 0.68% |
| Asian | 252 | 0.63% |
| Native Hawaiian or Pacific Islander | 22 | 0.05% |
Rio Arriba County 's average per capita income is $43,202. Household income levels show a median of $57,155. The poverty rate stands at 18.24%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $94,409 | - |
| Families | $69,893 | $88,764 |
| Households | $57,155 | $76,460 |
| Non Families | $33,759 | $50,505 |
Average Income
Median Household Income
Poverty Rate