Union Mill, VA Demographics

A map of Union Mill's Population by Race

Union Mill, Virginia has an estimated population of 4,484, a large decrease from the 4,997 recorded in the 2020 Census. The population is 45.0% White, 39.0% Asian, 6.9% Multiracial, 6.2% Hispanic, 2.0% Black, and 1.0% Native American/Other. This demographic dot map shows the population of Union Mill, with one dot drawn for each person counted by the Census, color-coded by race.

Union Mill has become considerably more racially diverse since the 2020 Census. It is 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 Union Mill, that probability was 52.2% in 2020 and 63.6% in the most recent ACS estimates.

Union Mill is ranked the 210th most populous place in Virginia, out of 688 places. This ranking is based on the Census definition of a place, which includes incorporated places like cities, towns, and villages, as well as unincorporated census-designated places (CDPs). Union Mill was ranked the 200th most populous place in the 2020 Census.

Union Mill's White Population

2,017 residents of Union Mill, or 45.0% of the population, identify as White. The share of White residents in Union Mill is considerably lower than in Virginia overall, where 58.4% of the population is White. Union Mill ranks 402nd statewide in terms of White residents as a share of the population, out of 688 places.

Since the 2020 Census, Union Mill's White population has declined by an estimated 38.6%. White residents' share of Union Mill's population has decreased from 65.7% to 45.0%.

Union Mill is more White than neighboring Fair Lakes (35.7% White), and Manassas Park (26.4% White). Union Mill is less White than neighboring Clifton (97.4% White), Braddock (61% White), and Fairfax Station (65.9% White).

Union Mill's Black Population

89 residents of Union Mill, or 2.0% of the population, identify as Black. The share of Black residents in Union Mill is significantly lower than in Virginia overall, where 18.3% of the population is Black. Union Mill ranks 488th statewide in terms of Black residents as a share of the population, out of 688 places.

Since the 2020 Census, Union Mill's Black population has declined by an estimated 36.4%. Black residents' share of Union Mill's population has decreased from 2.8% to 2.0%.

Union Mill is more Black than neighboring Clifton (0% Black), and Braddock (0.9% Black). Union Mill is less Black than neighboring Fairfax Station (4.5% Black), Fair Lakes (7.2% Black), and Manassas Park (13.6% Black).

Union Mill's Asian Population

1,749 residents of Union Mill, or 39.0% of the population, identify as Asian. The share of Asian residents in Union Mill is significantly higher than in Virginia overall, where 6.9% of the population is Asian. Union Mill ranks 47th statewide in terms of Asian residents as a share of the population, out of 688 places.

Since the 2020 Census, Union Mill's Asian population has grown by an estimated 77.7%. Asian residents' share of Union Mill's population has increased from 19.7% to 39.0%.

Union Mill is more Asian than neighboring Clifton (0% Asian), Braddock (23.3% Asian), Fairfax Station (11.2% Asian), and Manassas Park (10.2% Asian). Union Mill is less Asian than neighboring Fair Lakes (39.6% Asian).

Union Mill's Hispanic Population

277 residents of Union Mill, or 6.2% of the population, identify as Hispanic. The share of Hispanic residents in Union Mill is slightly lower than in Virginia overall, where 11% of the population is Hispanic. Union Mill ranks 277th statewide in terms of Hispanic residents as a share of the population, out of 688 places.

Since the 2020 Census, Union Mill's Hispanic population has declined by an estimated 9.8%. Hispanic residents' share of Union Mill's population has remained roughly unchanged at 6.2%.

Union Mill is more Hispanic than neighboring Clifton (1% Hispanic). Union Mill is less Hispanic than neighboring Braddock (7.4% Hispanic), Fairfax Station (11.7% Hispanic), Fair Lakes (7.9% Hispanic), and Manassas Park (46.8% Hispanic).

Union Mill's Native American/Other Population

44 residents of Union Mill, or 1.0% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Union Mill is comparable to the share in Virginia overall, where 0.8% of the population is Native American/Other. Union Mill ranks 291st statewide in terms of Native American/Other residents as a share of the population, out of 688 places.

Since the 2020 Census, Union Mill's Native American/Other population has grown by an estimated 15.8%. Native American/Other residents' share of Union Mill's population has remained roughly unchanged at 1.0%.

Union Mill is more Native American/Other than neighboring Fairfax Station (0.3% Native American/Other), and Manassas Park (0% Native American/Other). Union Mill is less Native American/Other than neighboring Clifton (1.3% Native American/Other), and Fair Lakes (4.2% Native American/Other).

Union Mill's Multiracial Population

308 residents of Union Mill, or 6.9% of the population, identify as Multiracial. The share of Multiracial residents in Union Mill is slightly higher than in Virginia overall, where 4.7% of the population is Multiracial. Union Mill ranks 236th statewide in terms of Multiracial residents as a share of the population, out of 688 places.

Since the 2020 Census, Union Mill's Multiracial population has grown by an estimated 26.7%. Multiracial residents' share of Union Mill's population has increased from 4.9% to 6.9%.

Union Mill is more Multiracial than neighboring Clifton (0.3% Multiracial), Braddock (6.3% Multiracial), Fairfax Station (6.5% Multiracial), Fair Lakes (5.4% Multiracial), and Manassas Park (3% 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.