San Juan County Demographics

A map of San Juan County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
Native American/Other	46,693	48,934	38.6%	40.2%
White	43,773	43,583	36.2%	35.8%
Hispanic	23,976	23,630	19.8%	19.4%
Multiracial	4,849	4,088	4.0%	3.4%
Asian	946	872	0.8%	0.7%
Black	705	554	0.6%	0.5%

San Juan County, New Mexico has an estimated population of 120,942, a less than 1% change from the 121,661 recorded in the 2020 Census. The population is 38.6% Native American/Other, 36.2% White, 19.8% Hispanic, 4.0% Multiracial, 0.8% Asian, and 0.6% Black. This demographic dot map shows the population of San Juan County, with one dot drawn for each person counted by the Census, color-coded by race.

San Juan has become slightly more racially diverse since the 2020 Census. It is considerably more 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 Juan County, that probability was 67.1% in 2020 and 67.9% in the most recent ACS estimates.

San Juan County is ranked the 5th most populous county in New Mexico, out of 33 counties. San Juan County was ranked the 5th most populous county in the 2020 Census.

San Juan County's White Population

43,773 residents of San Juan County, or 36.2% of the population, identify as White. The share of White residents in San Juan County is comparable to the share in New Mexico overall, where 36% of the population is White. San Juan County ranks 22nd statewide in terms of White residents as a share of the population, out of 33 counties.

Since the 2020 Census, San Juan County's White population has remained roughly the same. White residents' share of San Juan County's population has remained roughly unchanged at 36.2%.

San Juan County is more White than neighboring McKinley County (8% White). San Juan County is less White than neighboring Montezuma County (70.5% White), La Plata County (76.1% White), Dolores County (82.7% White), and San Juan County (76.2% White).

San Juan County's Black Population

705 residents of San Juan County, or 0.6% of the population, identify as Black. The share of Black residents in San Juan County is comparable to the share in New Mexico overall, where 1.8% of the population is Black. San Juan County ranks 24th statewide in terms of Black residents as a share of the population, out of 33 counties.

Since the 2020 Census, San Juan County's Black population has grown by an estimated 27.3%. Black residents' share of San Juan County's population has remained roughly unchanged at 0.6%.

San Juan County is more Black than neighboring La Plata County (0.2% Black), McKinley County (0.4% Black), Dolores County (0% Black), and San Juan County (0% Black). San Juan County is less Black than neighboring Montezuma County (0.7% Black).

San Juan County's Asian Population

946 residents of San Juan County, or 0.8% of the population, identify as Asian. The share of Asian residents in San Juan County is comparable to the share in New Mexico overall, where 1.6% of the population is Asian. San Juan County ranks 17th statewide in terms of Asian residents as a share of the population, out of 33 counties.

Since the 2020 Census, San Juan County's Asian population has grown by an estimated 8.5%. Asian residents' share of San Juan County's population has remained roughly unchanged at 0.8%.

San Juan County is more Asian than neighboring Dolores County (0% Asian), and San Juan County (0% Asian). San Juan County is less Asian than neighboring Montezuma County (0.9% Asian), and McKinley County (1.4% Asian).

San Juan County's Hispanic Population

23,976 residents of San Juan County, or 19.8% of the population, identify as Hispanic. The share of Hispanic residents in San Juan County is significantly lower than in New Mexico overall, where 48.4% of the population is Hispanic. San Juan County ranks 30th statewide in terms of Hispanic residents as a share of the population, out of 33 counties.

Since the 2020 Census, San Juan County's Hispanic population has grown by an estimated 1.5%. Hispanic residents' share of San Juan County's population has remained roughly unchanged at 19.8%.

San Juan County is more Hispanic than neighboring Montezuma County (12.5% Hispanic), La Plata County (12.9% Hispanic), McKinley County (12.2% Hispanic), Dolores County (9.9% Hispanic), and San Juan County (18.2% Hispanic).

San Juan County's Native American/Other Population

46,693 residents of San Juan County, or 38.6% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in San Juan County is significantly higher than in New Mexico overall, where 9% of the population is Native American/Other. San Juan County ranks 3rd statewide in terms of Native American/Other residents as a share of the population, out of 33 counties.

Since the 2020 Census, San Juan County's Native American/Other population has declined by an estimated 4.6%. Native American/Other residents' share of San Juan County's population has decreased from 40.2% to 38.6%.

San Juan County is more Native American/Other than neighboring Montezuma County (9.7% Native American/Other), La Plata County (5.8% Native American/Other), Dolores County (2.8% Native American/Other), and San Juan County (1% Native American/Other). San Juan County is less Native American/Other than neighboring McKinley County (75.6% Native American/Other).

San Juan County's Multiracial Population

4,849 residents of San Juan County, or 4.0% of the population, identify as Multiracial. The share of Multiracial residents in San Juan County is comparable to the share in New Mexico overall, where 3.1% of the population is Multiracial. San Juan County ranks 6th statewide in terms of Multiracial residents as a share of the population, out of 33 counties.

Since the 2020 Census, San Juan County's Multiracial population has grown by an estimated 18.6%. Multiracial residents' share of San Juan County's population has increased from 3.4% to 4.0%.

San Juan County is more Multiracial than neighboring McKinley County (2.4% Multiracial). San Juan County is less Multiracial than neighboring Montezuma County (5.7% Multiracial), La Plata County (4.3% Multiracial), Dolores County (4.5% Multiracial), and San Juan County (4.6% 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.