Costilla County, Colorado
Located in Colorado, Costilla County has a population of 3,607 residents and a median age of 50.5 years, making it the #2,994 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 21.0%. The median home value is $184,700, and the median household income is $36,861, which is 51% below the national median.
Demographics
Costilla County has a population of 3,607, making it the #2,994 most populous county in the US. The median age is 50.5 years, which is 29.8% above the national median.
Population Trend
Rankings →Year-over-Year Population Growth
Age & Sex Distribution
Race & Ethnicity
Nativity
Geographic Mobility (Past Year)
Economy
The median household income in Costilla County is $36,861, ranking #3,107 out of 3,222 counties — 50.9% below the national median. The poverty rate is 21.0% and unemployment stands at 3.5%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Costilla County is $184,700 (-34.5% vs national). Renters pay a median of $927/mo and the homeownership rate is 79.0%.
Median Home Value Trend
Rankings →Household Type
Education
In Costilla County, 24.9% of adults age 25+ hold a bachelor's degree or higher, which is 26.2% below the national average, ranking #1,252 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Costilla County is 69.9 years. 24.0% of adults report poor or fair health and 11.1% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
16.3% of adults in Costilla County smoke , 33.7% are obese , and 18.1% report excessive drinking.
Adult Smoking Trend
Safety
The suicide rate is 69.4 per 100,000. Motor vehicle deaths occur at a rate of 37.9 per 100,000.
Families & Children
37.2% of children in Costilla County live in poverty . The teen birth rate is 19.1 per 1,000 females age 15–19.
Teen Birth Rate Trend
Civic & Transportation
Voter turnout in Costilla County is 69.3%. The mean commute time is 26.0 min, which is 5.8% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Costilla County voted Democratic with a margin of 14.6%. The vote was 55.5% Dem / 40.9% Rep. Compared to 2020, the margin shifted 12.6 toward Republicans .
Vote Share Over Time
About Costilla County, Colorado
Costilla County, Colorado has a total population of 3,607, making it the 2,994th most populous county in the United States. The median age in Costilla County is 50.5 years, which is 29.8% above the national median of 38.9 years.
The median household income in Costilla County is $36,861, which ranks #3,107 of 3,222 counties nationwide. This is 50.9% below the national median of $75,149. The poverty rate is 21.0%, higher than the national rate of 12.6%. The unemployment rate stands at 3.5%.
The median home value in Costilla County is $184,700, 34.5% below the national median. Renters in Costilla County pay a median gross rent of $927 per month. The homeownership rate is 79.0%, compared to the national rate of 64.4%.
In Costilla County, 24.9% of residents aged 25 and older hold a bachelor's degree or higher, 26.2% below the national average of 33.7%. Health insurance coverage stands at 91.5% of the population. The average commute time for workers is 26.0 min.
Costilla County is a diverse community. The largest racial or ethnic group is Hispanic or Latino at 54.7% of the population, followed by White (non-Hispanic) (37.3%) and Two or More Races (4.4%).
All data for Costilla County, Colorado comes from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates. These figures are estimates based on survey sampling and are subject to margin of error. For the most detailed and up-to-date data, visit the Census Bureau's official data portal.