Rio Arriba County Flag

Rio Arriba County

State:
New Mexico
County Seat:

Rio Arriba County's estimated 2026 population is 40,023 with a growth rate of 0.09% in the past year according to the most recent United States census data. Rio Arriba County is the 13th largest county in New Mexico. The 2010 population was 40,286 and has seen a growth of -0.65% since that time.

40,023
Total Population
7
Population Density (mi²)
13
Population Rank (State)
34 0.09%
Annual Population Growth

Rio Arriba County Population

Demographics

Economics and Income Statistics