Costilla County's estimated 2026 population is 3,685 with a growth rate of 0.16% 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 4.42% since that time.
Data after 2023 is projected based on recent change
Overall: 50.5 years
Female: 48.4 years
Male: 53.3 years
There are 2,936 adults, (1,029 of whom are seniors) in Costilla County.
Female: 1,756 (48.7%)
Male: 1,851 (51.3%)
The racial composition of Costilla County includes 44.22% White, 8.73% other race, 4.49% Native American, and smaller percentages for Black or African American, Asian and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 1,595 | 44.22% |
| Two or more races | 1,389 | 38.51% |
| Other race | 315 | 8.73% |
| Native American | 162 | 4.49% |
| Black or African American | 91 | 2.52% |
| Asian | 55 | 1.52% |
Costilla County's average per capita income is $31,222. Household income levels show a median of $36,861. The poverty rate stands at 21%.
Name | Median | Mean |
|---|---|---|
| Married Families | $69,250 | - |
| Families | $50,104 | $67,071 |
| Households | $36,861 | $54,653 |
| Non Families | $16,667 | $34,014 |
Average Income
Median Household Income
Poverty Rate
