Alamosa County, Colorado
Alamosa County: County in Colorado, United States
About
Alamosa County is a county located in the U.S. state of Colorado. As of the 2010 census, the population was 15,445 and a population density of 8 people per km². After 10 years in 2020 county had an estimated population of 16,180 inhabitants. Its county seat is Alamosa. The county was created 111 years ago in 1913.

Quick Facts about Alamosa County
Population : | 16,180 (2020) |
Country : | United States of America |
State : | Colorado (United States) |
Twitter username : | visitalamosa |
Area : | 1874 km2 |
Water as percent of area : | 0.1% |
Land as percent of area : | 99.9% |
Altitude : | 7,536 feet / 2297 meters |
Capital : | Alamosa |
Establishment : | March 03, 1913 |
Time Zone : | America/Denver |
Local time : | 10:33:58 (22nd February 2025) |
Density : | 9 Pop. per km² as of 2020 |
Population growth : | 4.54% (2010-2020) |


Geography
Alamosa County is located at 37°34'22"N 105°47'18"W (37.5728900, -105.7882900). It has 5 neighbors: Conejos County, Costilla County, Huerfano County, Rio Grande County and Saguache County.
Alamosa County map
The largest city of Alamosa County is Alamosa with a population of 9,367. Other cities include and Hooper population 104. See all Alamosa County cities & populated places.
Alamosa County Populated Places
Cities, towns, neighborhoods & other populated places in Alamosa County.
City Name | Population | Title |
---|---|---|
Alamosa | 9,367 | City in Colorado, USA |
Hooper | 104 | Human settlement in Alamosa County, Colorado, United States of America |
- Official Website
Official website of Alamosa County
Alamosa County has 5 neighbours.
- Conejos County county in Colorado, United States
- Costilla County county in Colorado, United States
- Huerfano County county in Colorado, United States
- Rio Grande County county in Colorado, United States
- Saguache County county in Colorado, United States
- Alamosa
Demographics
The population of Alamosa County increased by 4.54% in 10 years.
Year | Population | % Change | Method |
2010 | 15,445 | - | census |
2011 | 15,709 | 1.68% | estimation process |
2012 | 15,680 | -0.18% | estimation process |
2013 | 15,787 | 0.68% | estimation process |
2014 | 15,803 | 0.1% | estimation process |
2015 | 15,894 | 0.57% | estimation process |
2016 | 16,053 | 0.99% | estimation process |
2017 | 16,108 | 0.34% | estimation process |
2018 | 16,248 | 0.86% | estimation process |
2019 | 16,233 | -0.09% | estimation process |
2020 | 16,180 | -0.33% | estimation process |
Colorado Other Counties (more counties)
County Name | Population | Title |
---|---|---|
Denver | 735,538 | The twentieth most populous city in the United States and the center of the Denver metropolitan area. |
Denver County | 735,538 | County in Colorado, United States, coterminous with the City of Denver |
El Paso County | 728,310 | One of the 64 counties in the U. |
Arapahoe County | 657,452 | County in Colorado, United States |
Jefferson County | 583,283 | County in Colorado, United States |
Adams County | 519,883 | County in Colorado, United States |
Colorado Springs | 482,131 | The second most populous city in Colorado and the center of the Colorado Springs metropolitan area. |
Aurora | 387,377 | The third most populous city in Colorado and the center of the Denver metropolitan area. |
Douglas County | 360,750 | County in Colorado, United States |
Larimer County | 360,428 | County in Colorado, United States |
Weld County | 333,983 | County in Colorado, United States |
Boulder County | 327,171 | County in Colorado, United States |
Pueblo County | 169,823 | County in Colorado, United States |
Fort Collins | 168,234 | The fifth most populous city in Colorado. |
Lakewood | 157,429 | The fifth most populous city in Colorado. |
Mesa County | 155,603 | County in Colorado, United States |