Alamosa County's estimated 2026 population is 16,731 with a growth rate of 0.13% in the past year according to the most recent United States census data. Alamosa County is the 30th largest county in Colorado. The 2010 population was 15,515 and has seen a growth of 7.84% since that time.
Data after 2023 is projected based on recent change
The racial composition of Alamosa County includes 61.62% White, 8.01% other race, 4.34% Native American, and smaller percentages for Black or African American, Asian, Native Hawaiian or Pacific Islander and multiracial populations.
White (61.62%)
Two or more races (23.32%)
Other race (8.01%)
Native American (4.34%)
Black or African American (1.84%)
Asian (0.51%)
Native Hawaiian or Pacific Islander (0.36%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 10,176 | 61.62% |
| Two or more races | 3,851 | 23.32% |
| Other race | 1,323 | 8.01% |
| Native American | 717 | 4.34% |
| Black or African American | 304 | 1.84% |
| Asian | 84 | 0.51% |
| Native Hawaiian or Pacific Islander | 60 | 0.36% |
Married
Widowed
Divorced
Separated
Never Married
Alamosa County's average per capita income is $37,261. Household income levels show a median of $51,445. The poverty rate stands at 18.23%.
Name | Median | Mean |
|---|---|---|
| Married Families | $76,500 | - |
| Families | $62,874 | $88,764 |
| Households | $51,445 | $73,926 |
| Non Families | $27,410 | $48,247 |
Average Income
Median Household Income
Poverty Rate
