Manassas County Demographics

A map of Manassas County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
Hispanic	18,865	18,345	43.9%	42.9%
White	14,320	14,816	33.3%	34.6%
Black	5,058	4,914	11.8%	11.5%
Asian	2,386	2,703	5.6%	6.3%
Multiracial	2,178	1,593	5.1%	3.7%
Native American/Other	169	401	0.4%	0.9%

Manassas County, Virginia has an estimated population of 42,976, a less than 1% change from the 42,772 recorded in the 2020 Census. The population is 43.9% Hispanic, 33.3% White, 11.8% Black, 5.6% Asian, 5.1% Multiracial, and 0.4% Native American/Other. This demographic dot map shows the population of Manassas County, with one dot drawn for each person counted by the Census, color-coded by race.

Manassas is about as racially diverse as it was in 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 Manassas County, that probability was 67.7% in 2020 and 67.7% in the most recent ACS estimates.

Manassas County is ranked the 41st most populous county in Virginia, out of 133 counties. Manassas County was ranked the 41st most populous county in the 2020 Census.

Manassas County's White Population

14,320 residents of Manassas County, or 33.3% of the population, identify as White. The share of White residents in Manassas County is significantly lower than in Virginia overall, where 58.4% of the population is White. Manassas County ranks 130th statewide in terms of White residents as a share of the population, out of 133 counties.

Since the 2020 Census, Manassas County's White population has declined by an estimated 3.3%. White residents' share of Manassas County's population has decreased from 34.6% to 33.3%.

Manassas County is more White than neighboring Manassas Park County (26.4% White). Manassas County is less White than neighboring Prince William County (37.9% White), Fairfax County (51.1% White), Fairfax County (46.8% White), and Fauquier County (74.8% White).

Manassas County's Black Population

5,058 residents of Manassas County, or 11.8% of the population, identify as Black. The share of Black residents in Manassas County is lower than in Virginia overall, where 18.3% of the population is Black. Manassas County ranks 74th statewide in terms of Black residents as a share of the population, out of 133 counties.

Since the 2020 Census, Manassas County's Black population has grown by an estimated 2.9%. Black residents' share of Manassas County's population has remained roughly unchanged at 11.8%.

Manassas County is more Black than neighboring Fairfax County (6.3% Black), Fairfax County (9.4% Black), and Fauquier County (6.3% Black). Manassas County is less Black than neighboring Prince William County (19.6% Black), and Manassas Park County (13.6% Black).

Manassas County's Asian Population

2,386 residents of Manassas County, or 5.6% of the population, identify as Asian. The share of Asian residents in Manassas County is comparable to the share in Virginia overall, where 6.9% of the population is Asian. Manassas County ranks 14th statewide in terms of Asian residents as a share of the population, out of 133 counties.

Since the 2020 Census, Manassas County's Asian population has declined by an estimated 11.7%. Asian residents' share of Manassas County's population has decreased from 6.3% to 5.6%.

Manassas County is more Asian than neighboring Fauquier County (1.7% Asian). Manassas County is less Asian than neighboring Prince William County (9.9% Asian), Manassas Park County (10.2% Asian), Fairfax County (18.4% Asian), and Fairfax County (19.9% Asian).

Manassas County's Hispanic Population

18,865 residents of Manassas County, or 43.9% of the population, identify as Hispanic. The share of Hispanic residents in Manassas County is significantly higher than in Virginia overall, where 11% of the population is Hispanic. Manassas County ranks 2nd statewide in terms of Hispanic residents as a share of the population, out of 133 counties.

Since the 2020 Census, Manassas County's Hispanic population has grown by an estimated 2.8%. Hispanic residents' share of Manassas County's population has increased from 42.9% to 43.9%.

Manassas County is more Hispanic than neighboring Prince William County (26.1% Hispanic), Fairfax County (18.9% Hispanic), Fairfax County (17.6% Hispanic), and Fauquier County (12.4% Hispanic). Manassas County is less Hispanic than neighboring Manassas Park County (46.8% Hispanic).

Manassas County's Native American/Other Population

169 residents of Manassas County, or 0.4% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Manassas County is comparable to the share in Virginia overall, where 0.8% of the population is Native American/Other. Manassas County ranks 30th statewide in terms of Native American/Other residents as a share of the population, out of 133 counties.

Since the 2020 Census, Manassas County's Native American/Other population has declined by an estimated 57.9%. Native American/Other residents' share of Manassas County's population has decreased from 0.9% to 0.4%.

Manassas County is more Native American/Other than neighboring Manassas Park County (0% Native American/Other). Manassas County is less Native American/Other than neighboring Prince William County (0.9% Native American/Other), Fairfax County (1.2% Native American/Other), Fairfax County (0.9% Native American/Other), and Fauquier County (0.6% Native American/Other).

Manassas County's Multiracial Population

2,178 residents of Manassas County, or 5.1% of the population, identify as Multiracial. The share of Multiracial residents in Manassas County is comparable to the share in Virginia overall, where 4.7% of the population is Multiracial. Manassas County ranks 76th statewide in terms of Multiracial residents as a share of the population, out of 133 counties.

Since the 2020 Census, Manassas County's Multiracial population has grown by an estimated 36.7%. Multiracial residents' share of Manassas County's population has increased from 3.7% to 5.1%.

Manassas County is more Multiracial than neighboring Manassas Park County (3% Multiracial), Fairfax County (4.1% Multiracial), and Fauquier County (4.2% Multiracial). Manassas County is less Multiracial than neighboring Prince William County (5.7% 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.