County in Colorado · 1,228 sq mi · 3 people per sq mi
3,685 people live in Costilla County. The typical household earns $36,861, and the median resident is 50.5 years old.
2026 projection
From 3,499 in 2020
Poverty rate 21%
Men 53.3 · Women 48.4
1870–2026
3,685
2026 projection
5.3% since 2020 (increase)
Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
1870–2026
3,685
2026 projection
5.3% since 2020 (increase)
Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
| 2026 | 3,685 | +6 | 0.16% |
|---|---|---|---|
| 2025 | 3,679 | +6 | 0.16% |
| 2024 | 3,673 | +55 | 1.52% |
| 2023 | 3,618 | +16 | 0.44% |
| 2022 | 3,602 | -5 | 0.14% |
| 2021 | 3,607 | +108 | 3.09% |
| 2020 | 3,499 | -373 | 9.63% |
| 2019 | 3,872 | +69 | 1.81% |
| 2018 | 3,803 | +45 | 1.20% |
| 2017 | 3,758 | +66 | 1.79% |
Showing 10 of 30 years.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 36 people).
Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002
Half of households earn more, half earn less
Typical yearly pay for a worker 25 or older.
About 1 in 5 residents
52% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 52% | 52% | 53% |
| Never married | 23% | 27% | 20% |
| Divorced | 18% | 19% | 16% |
| Widowed | 4% | 2% | 7% |
| Separated | 2% | 1% | 4% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
8 sources, all from the U.S. Census Bureau