Adams County Demographics

A map of Adams County's Population by Race

Adams County, Colorado has an estimated population of 530,225, a slight increase from the 519,572 recorded in the 2020 Census. The population is 45.2% White, 42.8% Hispanic, 3.8% Asian, 3.7% Multiracial, 3.3% Black, and 1.1% Native American/Other. This demographic dot map shows the population of Adams County, with one dot drawn for each person counted by the Census, color-coded by race.

Adams is about as racially diverse as it was in the 2020 Census. It is considerably 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 Adams County, that probability was 61.0% in 2020 and 60.9% in the most recent ACS estimates.

Adams County is ranked the 5th most populous county in Colorado, out of 64 counties. Adams County was ranked the 5th most populous county in the 2020 Census.

Adams County's White Population

239,594 residents of Adams County, or 45.2% of the population, identify as White. The share of White residents in Adams County is significantly lower than in Colorado overall, where 64.8% of the population is White. Adams County ranks 62nd statewide in terms of White residents as a share of the population, out of 64 counties.

Since the 2020 Census, Adams County's White population has remained roughly the same. White residents' share of Adams County's population has decreased from 46.1% to 45.2%.

Adams County is less White than neighboring Arapahoe County (55.2% White), Denver County (54% White), Elbert County (82.8% White), Morgan County (54.6% White), and Weld County (62% White).

Adams County's Black Population

17,757 residents of Adams County, or 3.3% of the population, identify as Black. The share of Black residents in Adams County is comparable to the share in Colorado overall, where 3.8% of the population is Black. Adams County ranks 10th statewide in terms of Black residents as a share of the population, out of 64 counties.

Since the 2020 Census, Adams County's Black population has grown by an estimated 10.6%. Black residents' share of Adams County's population has remained roughly unchanged at 3.3%.

Adams County is more Black than neighboring Elbert County (0.7% Black), Morgan County (2% Black), and Weld County (1.3% Black). Adams County is less Black than neighboring Arapahoe County (10.5% Black), and Denver County (8.6% Black).

Adams County's Asian Population

20,270 residents of Adams County, or 3.8% of the population, identify as Asian. The share of Asian residents in Adams County is comparable to the share in Colorado overall, where 3.2% of the population is Asian. Adams County ranks 5th statewide in terms of Asian residents as a share of the population, out of 64 counties.

Since the 2020 Census, Adams County's Asian population has declined by an estimated 10.2%. Asian residents' share of Adams County's population has decreased from 4.3% to 3.8%.

Adams County is more Asian than neighboring Denver County (3.6% Asian), Elbert County (0.7% Asian), Morgan County (0.7% Asian), and Weld County (1.6% Asian). Adams County is less Asian than neighboring Arapahoe County (6% Asian).

Adams County's Hispanic Population

226,823 residents of Adams County, or 42.8% of the population, identify as Hispanic. The share of Hispanic residents in Adams County is significantly higher than in Colorado overall, where 22.5% of the population is Hispanic. Adams County ranks 4th statewide in terms of Hispanic residents as a share of the population, out of 64 counties.

Since the 2020 Census, Adams County's Hispanic population has grown by an estimated 4.7%. Hispanic residents' share of Adams County's population has increased from 41.7% to 42.8%.

Adams County is more Hispanic than neighboring Arapahoe County (21.7% Hispanic), Denver County (28% Hispanic), Elbert County (9.2% Hispanic), Morgan County (38.4% Hispanic), and Weld County (31% Hispanic).

Adams County's Native American/Other Population

6,072 residents of Adams County, or 1.1% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Adams County is comparable to the share in Colorado overall, where 1% of the population is Native American/Other. Adams County ranks 32nd statewide in terms of Native American/Other residents as a share of the population, out of 64 counties.

Since the 2020 Census, Adams County's Native American/Other population has grown by an estimated 1.4%. Native American/Other residents' share of Adams County's population has remained roughly unchanged at 1.1%.

Adams County is more Native American/Other than neighboring Denver County (1% Native American/Other), Morgan County (0.5% Native American/Other), and Weld County (0.9% Native American/Other).

Adams County's Multiracial Population

19,709 residents of Adams County, or 3.7% of the population, identify as Multiracial. The share of Multiracial residents in Adams County is comparable to the share in Colorado overall, where 4.6% of the population is Multiracial. Adams County ranks 38th statewide in terms of Multiracial residents as a share of the population, out of 64 counties.

Since the 2020 Census, Adams County's Multiracial population has grown by an estimated 3.7%. Multiracial residents' share of Adams County's population has remained roughly unchanged at 3.7%.

Adams County is more Multiracial than neighboring Weld County (3.2% Multiracial). Adams County is less Multiracial than neighboring Arapahoe County (5.5% Multiracial), Denver County (4.8% Multiracial), Elbert County (5.5% Multiracial), and Morgan County (3.8% 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.