Costilla County's estimated 2026 population is 3,810 with a growth rate of 1.65% in the past year according to the most recent United States census data. Costilla County is the 55th largest county in Colorado. The 2010 population was 3,529 and has seen a growth of 7.96% since that time.
Data after 2023 is projected based on recent change
The racial composition of Costilla County includes 52.37% White, 8.15% other race, 3.67% Native American, 3.5% Black or African American, and smaller percentages for Asian and multiracial populations.
White (52.37%)
Two or more races (31.14%)
Other race (8.15%)
Native American (3.67%)
Black or African American (3.5%)
Asian (1.18%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 1,870 | 52.37% |
| Two or more races | 1,112 | 31.14% |
| Other race | 291 | 8.15% |
| Native American | 131 | 3.67% |
| Black or African American | 125 | 3.5% |
| Asian | 42 | 1.18% |
Married
Widowed
Divorced
Separated
Never Married
Costilla County's average per capita income is $33,214. Household income levels show a median of $36,519. The poverty rate stands at 22.33%.
Name | Median | Mean |
|---|---|---|
| Married Families | $74,539 | - |
| Families | $55,491 | $71,816 |
| Households | $36,519 | $57,688 |
| Non Families | $19,476 | $32,841 |
Average Income
Median Household Income
Poverty Rate
