Fairfax County Demographics

A map of Fairfax County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	12,800	12,911	51.1%	53.5%
Hispanic	4,728	4,278	18.9%	17.7%
Asian	4,597	4,519	18.4%	18.7%
Black	1,585	1,052	6.3%	4.4%
Multiracial	1,021	1,129	4.1%	4.7%
Native American/Other	295	257	1.2%	1.1%

Fairfax County, Virginia has an estimated population of 25,026, an increase from the 24,146 recorded in the 2020 Census. The population is 51.1% White, 18.9% Hispanic, 18.4% Asian, 6.3% Black, 4.1% Multiracial, and 1.2% Native American/Other. This demographic dot map shows the population of Fairfax County, with one dot drawn for each person counted by the Census, color-coded by race.

Fairfax has become more racially diverse since the 2020 Census. It is considerably more diverse than Virginia overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Fairfax County, that probability was 64.3% in 2020 and 66.3% in the most recent ACS estimates.

Fairfax County is ranked the 72nd most populous county in Virginia, out of 133 counties. Fairfax County was ranked the 71st most populous county in the 2020 Census.

Fairfax County's White Population

12,800 residents of Fairfax County, or 51.1% of the population, identify as White. The share of White residents in Fairfax County is lower than in Virginia overall, where 58.4% of the population is White. Fairfax County ranks 106th statewide in terms of White residents as a share of the population, out of 133 counties.

Since the 2020 Census, Fairfax County's White population has remained roughly the same. White residents' share of Fairfax County's population has decreased from 53.5% to 51.1%.

Fairfax County is more White than neighboring Fairfax County (46.8% White), Manassas Park County (26.4% White), and Manassas County (33.3% White). Fairfax County is less White than neighboring Falls Church County (68% White), and Arlington County (58% White).

Fairfax County's Black Population

1,585 residents of Fairfax County, or 6.3% of the population, identify as Black. The share of Black residents in Fairfax County is considerably lower than in Virginia overall, where 18.3% of the population is Black. Fairfax County ranks 103rd statewide in terms of Black residents as a share of the population, out of 133 counties.

Since the 2020 Census, Fairfax County's Black population has grown by an estimated 50.7%. Black residents' share of Fairfax County's population has increased from 4.4% to 6.3%.

Fairfax County is more Black than neighboring Falls Church County (3.5% Black). Fairfax County is less Black than neighboring Fairfax County (9.4% Black), Manassas Park County (13.6% Black), Arlington County (9.3% Black), and Manassas County (11.8% Black).

Fairfax County's Asian Population

4,597 residents of Fairfax County, or 18.4% of the population, identify as Asian. The share of Asian residents in Fairfax County is considerably higher than in Virginia overall, where 6.9% of the population is Asian. Fairfax County ranks 3rd statewide in terms of Asian residents as a share of the population, out of 133 counties.

Since the 2020 Census, Fairfax County's Asian population has grown by an estimated 1.7%. Asian residents' share of Fairfax County's population has remained roughly unchanged at 18.4%.

Fairfax County is more Asian than neighboring Falls Church County (9.1% Asian), Manassas Park County (10.2% Asian), Arlington County (10.5% Asian), and Manassas County (5.6% Asian). Fairfax County is less Asian than neighboring Fairfax County (19.9% Asian).

Fairfax County's Hispanic Population

4,728 residents of Fairfax County, or 18.9% of the population, identify as Hispanic. The share of Hispanic residents in Fairfax County is higher than in Virginia overall, where 11% of the population is Hispanic. Fairfax County ranks 7th statewide in terms of Hispanic residents as a share of the population, out of 133 counties.

Since the 2020 Census, Fairfax County's Hispanic population has grown by an estimated 10.5%. Hispanic residents' share of Fairfax County's population has increased from 17.7% to 18.9%.

Fairfax County is more Hispanic than neighboring Fairfax County (17.6% Hispanic), Falls Church County (10.8% Hispanic), and Arlington County (15.9% Hispanic). Fairfax County is less Hispanic than neighboring Manassas Park County (46.8% Hispanic), and Manassas County (43.9% Hispanic).

Fairfax County's Native American/Other Population

295 residents of Fairfax County, or 1.2% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Fairfax County is comparable to the share in Virginia overall, where 0.8% of the population is Native American/Other. Fairfax County ranks 17th statewide in terms of Native American/Other residents as a share of the population, out of 133 counties.

Since the 2020 Census, Fairfax County's Native American/Other population has grown by an estimated 14.8%. Native American/Other residents' share of Fairfax County's population has remained roughly unchanged at 1.2%.

Fairfax County is more Native American/Other than neighboring Fairfax County (0.9% Native American/Other), Manassas Park County (0% Native American/Other), Arlington County (0.8% Native American/Other), and Manassas County (0.4% Native American/Other). Fairfax County is less Native American/Other than neighboring Falls Church County (1.3% Native American/Other).

Fairfax County's Multiracial Population

1,021 residents of Fairfax County, or 4.1% of the population, identify as Multiracial. The share of Multiracial residents in Fairfax County is comparable to the share in Virginia overall, where 4.7% of the population is Multiracial. Fairfax County ranks 39th statewide in terms of Multiracial residents as a share of the population, out of 133 counties.

Since the 2020 Census, Fairfax County's Multiracial population has declined by an estimated 9.6%. Multiracial residents' share of Fairfax County's population has decreased from 4.7% to 4.1%.

Fairfax County is more Multiracial than neighboring Manassas Park County (3% Multiracial). Fairfax County is less Multiracial than neighboring Fairfax County (5.4% Multiracial), Falls Church County (7.2% Multiracial), Arlington County (5.5% Multiracial), and Manassas County (5.1% 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.