What is the population of Alamosa County?

The population of Alamosa County, CO is 16,180.

Where is Alamosa County located?

Alamosa County, CO is located at latitude 37.5728900 and longitude -105.7882900. It is in United States.

What is the area of Alamosa County?

The area of Alamosa County, CO is 1874 km².

What is the elevation of Alamosa County?

Alamosa County, CO has an elevation of 2296 meters (7533 feet) above sea level.

What time zone is Alamosa County in?

Alamosa County, CO is in the America/Denver time zone.

How has the population of Alamosa County changed?

The population of Alamosa County, CO has increased from 15,445 (2010) to 16,180 (2020), a change of 4.8%.

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 113 years ago in 1913.

Alamosa County locator map — Location of Alamosa County on Colorado map.

County Snapshot

Alamosa County at a glance

Alamosa County currently has 2 quality-checked populated place pages linked on MapSof, making it easier to jump from the county overview into local city pages.

Browse county places

Mapped populated places

These counts use a stricter populated-place filter so the main lists stay focused on real city and town pages.

Colorado counties

Open related pages

Largest city

Alamosa

Population 9,367

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%
Latitude & Longitude	37.5729,-105.7883
Altitude	7,536 feet / 2297 meters
Capital	Alamosa
Establishment	March 08, 1913
Time Zone	America/Denver
Local time	22:32:09 (18th April 2026)
Density	9 Pop. per km² as of 2020
Population growth	4.54% (2010-2020)
Weather	17℉ Clear 7-days weather

Alamosa County Courthouse image

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

Click "full screen"

icon to open full mode. View satellite images

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

Weather

17°F

Clear

5 to 20 mph NNW Tonight

Clear, with a low around 17. North northwest wind 5 to 20 mph, with gusts as high as 35 mph.

7-Day Forecast

Official website of Alamosa County

Official Website Twitter

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

Alamosa, Alamosa Kun, Alamosa Kūn, Alamosa konderria, Alamosa maakond, Alamosa megye, Alamosa srjan, Alamoza, Comitatul Alamosa, Comte d'Alamosa, Comte dAlamosa, Comté d'Alamosa, Comté dAlamosa, Condado de Alamosa, Condado han Alamosa, Contea di Alamosa, Hrabstwo Alamosa, Okrug Alamosa, Quan Alamosa, Quận Alamosa, a la mo sa xian, alamosa ka'unti, aramosa jun, mqatʿt alamwsa, shhrstan alamwsa klradw, Аламоза, Аламоса, Округ Аламоса, Ալամոսա շրջան, الاموسا کاؤنٹی, الاموسا کاؤنٹی، کولوراڈو, شهرستان آلاموسا، کلرادو, مقاطعة ألاموسا, আলামোসা কাউন্টি, アラモサ郡, 阿拉莫薩縣

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