San Miguel County Demographics

A map of San Miguel County's Population by Race

San Miguel County, New Mexico has an estimated population of 26,850, a slight decrease from the 27,201 recorded in the 2020 Census. The population is 75.2% Hispanic, 17.6% White, 3.1% Multiracial, 2.5% Native American/Other, 1.3% Black, and 0.4% Asian. This demographic dot map shows the population of San Miguel County, with one dot drawn for each person counted by the Census, color-coded by race.

San Miguel has become more racially diverse since the 2020 Census. It is considerably less diverse than New Mexico overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In San Miguel County, that probability was 39.2% in 2020 and 40.2% in the most recent ACS estimates.

San Miguel County is ranked the 16th most populous county in New Mexico, out of 33 counties. San Miguel County was ranked the 16th most populous county in the 2020 Census.

San Miguel County's White Population

4,713 residents of San Miguel County, or 17.6% of the population, identify as White. The share of White residents in San Miguel County is significantly lower than in New Mexico overall, where 36% of the population is White. San Miguel County ranks 29th statewide in terms of White residents as a share of the population, out of 33 counties.

Since the 2020 Census, San Miguel County's White population has declined by an estimated 13.5%. White residents' share of San Miguel County's population has decreased from 20.0% to 17.6%.

San Miguel County is more White than neighboring Guadalupe County (16.6% White). San Miguel County is less White than neighboring Mora County (24.7% White), Harding County (47.5% White), Colfax County (47.4% White), and Santa Fe County (44% White).

San Miguel County's Black Population

344 residents of San Miguel County, or 1.3% of the population, identify as Black. The share of Black residents in San Miguel County is comparable to the share in New Mexico overall, where 1.8% of the population is Black. San Miguel County ranks 15th statewide in terms of Black residents as a share of the population, out of 33 counties.

Since the 2020 Census, San Miguel County's Black population has grown by an estimated 30.3%. Black residents' share of San Miguel County's population has remained roughly unchanged at 1.3%.

San Miguel County is more Black than neighboring Mora County (0% Black), Colfax County (0.5% Black), and Santa Fe County (0.8% Black). San Miguel County is less Black than neighboring Guadalupe County (1.9% Black), and Harding County (1.8% Black).

San Miguel County's Asian Population

97 residents of San Miguel County, or 0.4% of the population, identify as Asian. The share of Asian residents in San Miguel County is comparable to the share in New Mexico overall, where 1.6% of the population is Asian. San Miguel County ranks 24th statewide in terms of Asian residents as a share of the population, out of 33 counties.

Since the 2020 Census, San Miguel County's Asian population has declined by an estimated 26.5%. Asian residents' share of San Miguel County's population has remained roughly unchanged at 0.4%.

San Miguel County is more Asian than neighboring Mora County (0% Asian), Harding County (0% Asian), and Colfax County (0.2% Asian). San Miguel County is less Asian than neighboring Guadalupe County (1.6% Asian), and Santa Fe County (1.4% Asian).

San Miguel County's Hispanic Population

20,192 residents of San Miguel County, or 75.2% of the population, identify as Hispanic. The share of Hispanic residents in San Miguel County is significantly higher than in New Mexico overall, where 48.4% of the population is Hispanic. San Miguel County ranks 3rd statewide in terms of Hispanic residents as a share of the population, out of 33 counties.

Since the 2020 Census, San Miguel County's Hispanic population has declined by an estimated 1.5%. Hispanic residents' share of San Miguel County's population has remained roughly unchanged at 75.2%.

San Miguel County is more Hispanic than neighboring Mora County (73.5% Hispanic), Harding County (36.4% Hispanic), Colfax County (47.6% Hispanic), and Santa Fe County (47.9% Hispanic). San Miguel County is less Hispanic than neighboring Guadalupe County (76.6% Hispanic).

San Miguel County's Native American/Other Population

661 residents of San Miguel County, or 2.5% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in San Miguel County is lower than in New Mexico overall, where 9% of the population is Native American/Other. San Miguel County ranks 19th statewide in terms of Native American/Other residents as a share of the population, out of 33 counties.

Since the 2020 Census, San Miguel County's Native American/Other population has grown by an estimated 60.4%. Native American/Other residents' share of San Miguel County's population has increased from 1.5% to 2.5%.

San Miguel County is more Native American/Other than neighboring Mora County (1.4% Native American/Other), Guadalupe County (1.9% Native American/Other), and Colfax County (1.2% Native American/Other). San Miguel County is less Native American/Other than neighboring Harding County (11.6% Native American/Other), and Santa Fe County (3% Native American/Other).

San Miguel County's Multiracial Population

843 residents of San Miguel County, or 3.1% of the population, identify as Multiracial. The share of Multiracial residents in San Miguel County is comparable to the share in New Mexico overall, where 3.1% of the population is Multiracial. San Miguel County ranks 30th statewide in terms of Multiracial residents as a share of the population, out of 33 counties.

Since the 2020 Census, San Miguel County's Multiracial population has grown by an estimated 84.9%. Multiracial residents' share of San Miguel County's population has increased from 1.7% to 3.1%.

San Miguel County is more Multiracial than neighboring Mora County (0.4% Multiracial), Guadalupe County (1.3% Multiracial), Harding County (2.7% Multiracial), Colfax County (3% Multiracial), and Santa Fe County (2.9% 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.