Arapahoe County Demographics

A map of Arapahoe County's Population by Race

Arapahoe County, Colorado had a population of 655,070 in 2020. It was 56.2% White, 10.4% Black, 6.4% Asian, 20.7% Hispanic, 1.2% Native American/Other, and 5.1% Multiracial. This map presents the population of Arapahoe County, with one dot drawn for each person counted in the 2020 Census, color-coded by race.

Arapahoe County is the 3rd most populous county of the 64 counties in Colorado.

Arapahoe County's White Population

368,047 residents of Arapahoe County identify as White, or 56.2%. This makes the White share of the population of Arapahoe County slightly less than the White share of the population of Colorado (65.1% White). Of the 64 counties in Colorado, Arapahoe County is ranked #54 in terms of White residents as a share of the population.

Arapahoe County is more White than neighboring Adams County (46.1% White), and Denver County (54.3% White). Arapahoe County is less White than neighboring Elbert County (85.1% White), Douglas County (77.9% White), and Broomfield County (72.7% White).

Arapahoe County's Black Population

68,152 residents of Arapahoe County identify as Black, or 10.4%. This makes the Black share of the population of Arapahoe County slightly larger than the Black share of the population of Colorado (3.8% Black). Of the 64 counties in Colorado, Arapahoe County is ranked #1 in terms of Black residents as a share of the population.

Arapahoe County is more Black than neighboring Adams County (3.1% Black), Elbert County (0.5% Black), Denver County (8.5% Black), Douglas County (1.3% Black), and Broomfield County (1.3% Black).

Arapahoe County's Asian Population

41,855 residents of Arapahoe County identify as Asian, or 6.4%. This makes the Asian share of the population of Arapahoe County roughly similar to the Asian share of the population of Colorado (3.4% Asian). Of the 64 counties in Colorado, Arapahoe County is ranked #2 in terms of Asian residents as a share of the population.

Arapahoe County is more Asian than neighboring Adams County (4.3% Asian), Elbert County (0.7% Asian), Denver County (3.8% Asian), and Douglas County (5.5% Asian). Arapahoe County is less Asian than neighboring Broomfield County (6.9% Asian).

Arapahoe County's Hispanic Population

135,729 residents of Arapahoe County identify as Hispanic, or 20.7%. This makes the Hispanic share of the population of Arapahoe County roughly similar to the Hispanic share of the population of Colorado (21.9% Hispanic). Of the 64 counties in Colorado, Arapahoe County is ranked #23 in terms of Hispanic residents as a share of the population.

Arapahoe County is more Hispanic than neighboring Elbert County (7.9% Hispanic), Douglas County (9.5% Hispanic), and Broomfield County (13.4% Hispanic). Arapahoe County is less Hispanic than neighboring Adams County (41.7% Hispanic), and Denver County (27.9% Hispanic).

Arapahoe County's Native American/Other Population

7,837 residents of Arapahoe County identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other, or 1.2%. This makes the Native American/Other share of the population of Arapahoe 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, Arapahoe County is ranked #31 in terms of Native American/Other residents as a share of the population.

Arapahoe County is more Native American/Other than neighboring Elbert County (1% Native American/Other), Douglas County (0.8% Native American/Other), and Broomfield County (0.8% Native American/Other).

Arapahoe County's Multiracial Population

33,450 residents of Arapahoe County identify as Multiracial, or 5.1%. This makes the Multiracial share of the population of Arapahoe County roughly similar to the Multiracial share of the population of Colorado (4.5% Multiracial). Of the 64 counties in Colorado, Arapahoe County is ranked #6 in terms of Multiracial residents as a share of the population.

Arapahoe County is more Multiracial than neighboring Adams County (3.7% Multiracial), Elbert County (4.8% Multiracial), Denver County (4.2% Multiracial), Douglas County (4.9% Multiracial), and Broomfield County (4.9% Multiracial).

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