Alamosa County, CO Demographics
Alamosa County, CO is the 31st most populous of 64 counties in Colorado, with 16,376 residents across 723 square miles. That is about 23 people per square mile.
At the 2020 census
| Population | 16,376 |
|---|---|
| Land area | 723 sq mi |
| Density | 23 / sq mi |
Data: 2020 Census · American Community Survey 2024
How Alamosa County compares to the US
We're computing this county's comparison table — check back shortly. Population, land area, and density above are already exact.
Central Location: Alamosa County, CO
Measured from the county's main population center using 2020 census blocks.
We're computing the drive-time and radius areas around Alamosa County, CO — check back shortly. Meanwhile you can drop a pin anywhere in the radius tool.
Census tracts in Alamosa County, CO
| Name | Population | Sq mi | Per sq mi |
|---|---|---|---|
| Census Tract 9603 | 5,177 | 14.1 | 366 |
| Census Tract 9602.02 | 4,173 | 4.7 | 897 |
| Census Tract 9602.01 | 2,693 | 4.2 | 640 |
| Census Tract 9601 | 2,637 | 162.4 | 16 |
| Census Tract 9600 | 1,696 | 537.3 | 3 |
Related places
Other counties nearby
Nearest counties
Metro areas containing Alamosa County
About this page
This page shows demographics for a US county from the 2020 census and the American Community Survey: population, land area, density, urban share, and how the county compares to national averages for income, housing, age, and more.
Counties subdivide into census tracts, listed below with their populations. The drive-time and radius tables measure the population around the county's main population center.