Alamosa, CO Demographics

A map of Alamosa's Population by Race

Alamosa, Colorado has an estimated population of 9,879, a less than 1% change from the 9,806 recorded in the 2020 Census. The population is 54.0% Hispanic, 38.5% White, 2.2% Multiracial, 2.0% Native American/Other, 1.7% Black, and 1.7% Asian. This demographic dot map shows the population of Alamosa, with one dot drawn for each person counted by the Census, color-coded by race.

Alamosa is about as racially diverse as it was in the 2020 Census. It is more diverse than Colorado overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Alamosa, that probability was 56.3% in 2020 and 55.9% in the most recent ACS estimates.

Alamosa is ranked the 72nd most populous place in Colorado, out of 482 places. This ranking is based on the Census definition of a place, which includes incorporated places like cities, towns, and villages, as well as unincorporated census-designated places (CDPs). Alamosa was ranked the 69th most populous place in the 2020 Census.

Alamosa's White Population

3,803 residents of Alamosa, or 38.5% of the population, identify as White. The share of White residents in Alamosa is significantly lower than in Colorado overall, where 64.8% of the population is White. Alamosa ranks 448th statewide in terms of White residents as a share of the population, out of 482 places.

Since the 2020 Census, Alamosa's White population has remained roughly the same. White residents' share of Alamosa's population has decreased from 39.1% to 38.5%.

Alamosa is more White than neighboring Alamosa East (34.1% White), and Monte Vista (24.7% White). Alamosa is less White than neighboring La Jara (40.8% White), Sanford (48.2% White), and Hooper (92.1% White).

Alamosa's Black Population

167 residents of Alamosa, or 1.7% of the population, identify as Black. The share of Black residents in Alamosa is slightly lower than in Colorado overall, where 3.8% of the population is Black. Alamosa ranks 44th statewide in terms of Black residents as a share of the population, out of 482 places.

Since the 2020 Census, Alamosa's Black population has declined by an estimated 13.5%. Black residents' share of Alamosa's population has remained roughly unchanged at 1.7%.

Alamosa is more Black than neighboring La Jara (0% Black), Sanford (0% Black), Hooper (0% Black), and Monte Vista (0.3% Black). Alamosa is less Black than neighboring Alamosa East (8.4% Black).

Alamosa's Asian Population

164 residents of Alamosa, or 1.7% of the population, identify as Asian. The share of Asian residents in Alamosa is comparable to the share in Colorado overall, where 3.2% of the population is Asian. Alamosa ranks 149th statewide in terms of Asian residents as a share of the population, out of 482 places.

Since the 2020 Census, Alamosa's Asian population has grown by an estimated 35.5%. Asian residents' share of Alamosa's population has increased from 1.2% to 1.7%.

Alamosa is more Asian than neighboring Alamosa East (0% Asian), La Jara (0% Asian), Hooper (0% Asian), and Monte Vista (0% Asian). Alamosa is less Asian than neighboring Sanford (1.8% Asian).

Alamosa's Hispanic Population

5,334 residents of Alamosa, or 54.0% of the population, identify as Hispanic. The share of Hispanic residents in Alamosa is significantly higher than in Colorado overall, where 22.5% of the population is Hispanic. Alamosa ranks 33rd statewide in terms of Hispanic residents as a share of the population, out of 482 places.

Since the 2020 Census, Alamosa's Hispanic population has grown by an estimated 2.3%. Hispanic residents' share of Alamosa's population has increased from 53.2% to 54.0%.

Alamosa is more Hispanic than neighboring Alamosa East (52.4% Hispanic), Sanford (45.8% Hispanic), and Hooper (5.9% Hispanic). Alamosa is less Hispanic than neighboring La Jara (59.2% Hispanic), and Monte Vista (69.5% Hispanic).

Alamosa's Native American/Other Population

193 residents of Alamosa, or 2.0% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Alamosa is comparable to the share in Colorado overall, where 1% of the population is Native American/Other. Alamosa ranks 66th statewide in terms of Native American/Other residents as a share of the population, out of 482 places.

Since the 2020 Census, Alamosa's Native American/Other population has declined by an estimated 9.4%. Native American/Other residents' share of Alamosa's population has remained roughly unchanged at 2.0%.

Alamosa is more Native American/Other than neighboring Alamosa East (0% Native American/Other), and La Jara (0% Native American/Other). Alamosa is less Native American/Other than neighboring Sanford (2.5% Native American/Other), and Monte Vista (2.2% Native American/Other).

Alamosa's Multiracial Population

218 residents of Alamosa, or 2.2% of the population, identify as Multiracial. The share of Multiracial residents in Alamosa is slightly lower than in Colorado overall, where 4.6% of the population is Multiracial. Alamosa ranks 399th statewide in terms of Multiracial residents as a share of the population, out of 482 places.

Since the 2020 Census, Alamosa's Multiracial population has declined by an estimated 4.8%. Multiracial residents' share of Alamosa's population has remained roughly unchanged at 2.2%.

Alamosa is more Multiracial than neighboring La Jara (0% Multiracial), Sanford (1.6% Multiracial), and Hooper (0% Multiracial). Alamosa is less Multiracial than neighboring Alamosa East (5.2% Multiracial), and Monte Vista (3.3% Multiracial).

Sources: Most recent population estimates are from the 2020-2024 American Community Survey 5-Year Estimates. 2020 population counts and map data are from 2020 Census State Redistricting Data. Geographic data are from Census TIGER/Line Shapefiles.