Alamosa County , Colorado

Alamosa County: County in Colorado, United States


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 108 years ago in 1913.

Alamosa County Quick Facts

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 : 04:10:59 (9th December 2021)
Density : 9 Pop. per km² as of 2020
Population growth : 4.54% (2010-2020)
Weather : 18℉ Partly Cloudy 7-days weather
Alamosa County locator map
Location of Alamosa County on Colorado map.
Alamosa County Courthouse image
Alamosa County Courthouse
Alamosa County Courthouse image


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


Alamosa County forecast: Partly cloudy, with a low around 18. South wind 15 to 20 mph. more

Alamosa County has 5 neighbours.

  • Alamosa


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

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Local Places in Alamosa County

Other places with the same name (1)

Colorado Other Counties (more counties)

County Name Population Title
Denver 735,538 Capital city of the state of Colorado, United States; consolidated city and county
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 County seat of El Paso County, Colorado, United States
Aurora 387,377 City in Kane County, Illinois, United States
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 Municipality and county seat of Larimer County, Colorado, United States
Lakewood 157,429 City in Colorado
Mesa County 155,603 County in Colorado, United States