District of Columbia County Demographics

A map of District of Columbia County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
Black	283,502	282,066	41.6%	40.9%
White	248,392	261,771	36.5%	38.0%
Hispanic	81,152	77,652	11.9%	11.3%
Multiracial	33,273	29,485	4.9%	4.3%
Asian	29,294	33,192	4.3%	4.8%
Native American/Other	5,681	5,379	0.8%	0.8%

District of Columbia County, District of Columbia has an estimated population of 681,294, a slight decrease from the 689,545 recorded in the 2020 Census. The population is 41.6% Black, 36.5% White, 11.9% Hispanic, 4.9% Multiracial, 4.3% Asian, and 0.8% Native American/Other. This demographic dot map shows the population of District of Columbia County, with one dot drawn for each person counted by the Census, color-coded by race.

District of Columbia is about as racially diverse as it was in the 2020 Census. It is about as diverse as District of Columbia overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In District of Columbia County, that probability was 67.2% in 2020 and 67.5% in the most recent ACS estimates.

District of Columbia County is ranked the most populous county in District of Columbia, out of 1 counties. District of Columbia County was ranked the 1st most populous county in the 2020 Census.

District of Columbia County's White Population

248,392 residents of District of Columbia County, or 36.5% of the population, identify as White. The share of White residents in District of Columbia County is comparable to the share in District of Columbia overall, where 36.5% of the population is White. District of Columbia County ranks 1st statewide in terms of White residents as a share of the population, out of 1 counties.

Since the 2020 Census, District of Columbia County's White population has declined by an estimated 5.1%. White residents' share of District of Columbia County's population has decreased from 38.0% to 36.5%.

District of Columbia County is more White than neighboring Prince George's County (10.8% White). District of Columbia County is less White than neighboring Arlington County (58% White), Alexandria County (49.1% White), Falls Church County (68% White), and Fairfax County (46.8% White).

District of Columbia County's Black Population

283,502 residents of District of Columbia County, or 41.6% of the population, identify as Black. The share of Black residents in District of Columbia County is comparable to the share in District of Columbia overall, where 41.6% of the population is Black. District of Columbia County ranks 1st statewide in terms of Black residents as a share of the population, out of 1 counties.

Since the 2020 Census, District of Columbia County's Black population has remained roughly the same. Black residents' share of District of Columbia County's population has increased from 40.9% to 41.6%.

District of Columbia County is more Black than neighboring Arlington County (9.3% Black), Alexandria County (21% Black), Falls Church County (3.5% Black), and Fairfax County (9.4% Black). District of Columbia County is less Black than neighboring Prince George's County (58.2% Black).

District of Columbia County's Asian Population

29,294 residents of District of Columbia County, or 4.3% of the population, identify as Asian. The share of Asian residents in District of Columbia County is comparable to the share in District of Columbia overall, where 4.3% of the population is Asian. District of Columbia County ranks 1st statewide in terms of Asian residents as a share of the population, out of 1 counties.

Since the 2020 Census, District of Columbia County's Asian population has declined by an estimated 11.7%. Asian residents' share of District of Columbia County's population has decreased from 4.8% to 4.3%.

District of Columbia County is more Asian than neighboring Prince George's County (3.9% Asian). District of Columbia County is less Asian than neighboring Arlington County (10.5% Asian), Alexandria County (6.2% Asian), Falls Church County (9.1% Asian), and Fairfax County (19.9% Asian).

District of Columbia County's Hispanic Population

81,152 residents of District of Columbia County, or 11.9% of the population, identify as Hispanic. The share of Hispanic residents in District of Columbia County is comparable to the share in District of Columbia overall, where 11.9% of the population is Hispanic. District of Columbia County ranks 1st statewide in terms of Hispanic residents as a share of the population, out of 1 counties.

Since the 2020 Census, District of Columbia County's Hispanic population has grown by an estimated 4.5%. Hispanic residents' share of District of Columbia County's population has increased from 11.3% to 11.9%.

District of Columbia County is more Hispanic than neighboring Falls Church County (10.8% Hispanic). District of Columbia County is less Hispanic than neighboring Arlington County (15.9% Hispanic), Alexandria County (18.3% Hispanic), Prince George's County (22.5% Hispanic), and Fairfax County (17.6% Hispanic).

District of Columbia County's Native American/Other Population

5,681 residents of District of Columbia County, or 0.8% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in District of Columbia County is comparable to the share in District of Columbia overall, where 0.8% of the population is Native American/Other. District of Columbia County ranks 1st statewide in terms of Native American/Other residents as a share of the population, out of 1 counties.

Since the 2020 Census, District of Columbia County's Native American/Other population has grown by an estimated 5.6%. Native American/Other residents' share of District of Columbia County's population has remained roughly unchanged at 0.8%.

District of Columbia County is more Native American/Other than neighboring Alexandria County (0.6% Native American/Other). District of Columbia County is less Native American/Other than neighboring Falls Church County (1.3% Native American/Other), Prince George's County (0.9% Native American/Other), and Fairfax County (0.9% Native American/Other).

District of Columbia County's Multiracial Population

33,273 residents of District of Columbia County, or 4.9% of the population, identify as Multiracial. The share of Multiracial residents in District of Columbia County is comparable to the share in District of Columbia overall, where 4.9% of the population is Multiracial. District of Columbia County ranks 1st statewide in terms of Multiracial residents as a share of the population, out of 1 counties.

Since the 2020 Census, District of Columbia County's Multiracial population has grown by an estimated 12.8%. Multiracial residents' share of District of Columbia County's population has increased from 4.3% to 4.9%.

District of Columbia County is more Multiracial than neighboring Alexandria County (4.7% Multiracial), and Prince George's County (3.8% Multiracial). District of Columbia County is less Multiracial than neighboring Arlington County (5.5% Multiracial), Falls Church County (7.2% Multiracial), and Fairfax County (5.4% 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.