Rio Grande County Flag

Rio Grande County

State:
Colorado
County Seat:
Del Norte

Rio Grande County's 2026 population is estimated at 11,008, reflecting a -0.56% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Rio Grande County is the 37th largest county in Colorado. The 2010 population was 12,022 and has grown -8.43% since 2010.

11,008
Total Population
12
Population Density (mi²)
37
Population Rank (State)
-62 -0.56%
Annual Population Growth

Rio Grande County Population

Demographics

Economics and Income Statistics