Alamosa County Demographics

A map of Alamosa County's Population by Race

Alamosa County, Colorado had a population of 16,376 in 2020. It was 45.7% White, 1.3% Black, 0.9% Asian, 47.0% Hispanic, 2.1% Native American/Other, and 3.0% Multiracial. This map presents the population of Alamosa County, with one dot drawn for each person counted in the 2020 Census, color-coded by race.

Alamosa County is the 31st most populous county of the 64 counties in Colorado.

Alamosa County's White Population

7,490 residents of Alamosa County identify as White, or 45.7%. This makes the White share of the population of Alamosa County less than the White share of the population of Colorado (65.1% White). Of the 64 counties in Colorado, Alamosa County is ranked #63 in terms of White residents as a share of the population.

Alamosa County is more White than neighboring Costilla County (35.3% White). Alamosa County is less White than neighboring Conejos County (46.4% White), Rio Grande County (54.3% White), Custer County (89.5% White), and Saguache County (56.2% White).

Alamosa County's Black Population

211 residents of Alamosa County identify as Black, or 1.3%. This makes the Black share of the population of Alamosa County roughly similar to the Black share of the population of Colorado (3.8% Black). Of the 64 counties in Colorado, Alamosa County is ranked #14 in terms of Black residents as a share of the population.

Alamosa County is more Black than neighboring Costilla County (0.9% Black), Conejos County (0.2% Black), Rio Grande County (0.4% Black), Custer County (0.2% Black), and Saguache County (0.3% Black).

Alamosa County's Asian Population

142 residents of Alamosa County identify as Asian, or 0.9%. This makes the Asian share of the population of Alamosa County roughly similar to the Asian share of the population of Colorado (3.4% Asian). Of the 64 counties in Colorado, Alamosa County is ranked #21 in terms of Asian residents as a share of the population.

Alamosa County is more Asian than neighboring Conejos County (0.3% Asian), Rio Grande County (0.3% Asian), and Custer County (0.5% Asian). Alamosa County is less Asian than neighboring Costilla County (1.6% Asian), and Saguache County (1% Asian).

Alamosa County's Hispanic Population

7,701 residents of Alamosa County identify as Hispanic, or 47.0%. This makes the Hispanic share of the population of Alamosa County considerably larger than the Hispanic share of the population of Colorado (21.9% Hispanic). Of the 64 counties in Colorado, Alamosa County is ranked #3 in terms of Hispanic residents as a share of the population.

Alamosa County is more Hispanic than neighboring Rio Grande County (39.9% Hispanic), Custer County (3.8% Hispanic), and Saguache County (37.6% Hispanic). Alamosa County is less Hispanic than neighboring Costilla County (56.8% Hispanic), and Conejos County (50.7% Hispanic).

Alamosa County's Native American/Other Population

338 residents of Alamosa County identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other, or 2.1%. This makes the Native American/Other share of the population of Alamosa County roughly similar to the Native American/Other share of the population of Colorado (1.3% Native American/Other). Of the 64 counties in Colorado, Alamosa County is ranked #5 in terms of Native American/Other residents as a share of the population.

Alamosa County is more Native American/Other than neighboring Costilla County (1.3% Native American/Other), Conejos County (0.9% Native American/Other), Rio Grande County (1.7% Native American/Other), Custer County (1.8% Native American/Other), and Saguache County (2% Native American/Other).

Alamosa County's Multiracial Population

494 residents of Alamosa County identify as Multiracial, or 3.0%. This makes the Multiracial share of the population of Alamosa County roughly similar to the Multiracial share of the population of Colorado (4.5% Multiracial). Of the 64 counties in Colorado, Alamosa County is ranked #52 in terms of Multiracial residents as a share of the population.

Alamosa County is more Multiracial than neighboring Conejos County (1.5% Multiracial). Alamosa County is less Multiracial than neighboring Costilla County (4.1% Multiracial), Rio Grande County (3.3% Multiracial), and Custer County (4.1% Multiracial).

Source: 2020 Census State Redistricting Data and Census TIGER/Line Shapefiles.