How many people live in Rio Grande County, CO?
Updated Apr. 6, 2026Refreshed annually
In 2024, there were about 11,100 people living in Rio Grande County, CO. That makes Rio Grande County the 37th-most populous county in Colorado. It is home to 0.19% of people living in the state.
11.1K
population of Rio Grande County, CO (2024)
0.19%
County share of the Colorado population (2024)
About 11,100 people lived in Rio Grande County, CO in 2024.
Population estimates, 2000–2024
What are Rio Grande County, CO’s age demographics?
About 2,700 Rio Grande County, CO residents are aged 65 and older in 2024. That represents 24% of its population. For comparison, the age group represents 16.5% of Colorado’s population and 18% in the US overall.
Another 2,300 Rio Grande County residents, or 20.3% of the population, were children under 18. For comparison, the age group represents 20.5% of Colorado’s population and 21.6% in the US overall.
A higher share of Rio Grande County, CO's population is aged 65 or older than the US as a whole.
Population estimates by age group, (2024)
What are Rio Grande County, CO’s racial and ethnic demographics?
Hispanic residents make up 41.2% of the Rio Grande County, CO population, higher than the national share of 20%. Rio Grande County, CO also has a larger share of people identifying as non-Hispanic American Indian and Alaska Native (1.3%) than the US overall (0.72%).
In contrast, Rio Grande County’s non-Hispanic Black or African American population accounts for 0.92%, below the 12.6% nationwide, and the non-Hispanic Asian population makes up 0.41% of the county, compared with 6.5% 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.
Rio Grande County, CO has a higher share of a Hispanic population than Colorado as a whole.
Population estimates by race and ethnicity, (2024)
The largest city or town in Rio Grande County, CO is Monte Vista with about 4,000 residents in 2024.
Cities and towns in Rio Grande County, CO ranked by population
Population (2024), includes only portions within county
| City or town | Population | |
|---|---|---|
| 1. | Monte Vista | 4,030 |
| 2. | Del Norte | 1,410 |
| 3. | South Fork | 504 |
| 4. | Center (pt.) | 42 |
| 5. | Balance of Rio Grande County | 5,146 |
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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.
