Union Mill Flag

Union Mill

County:
Fairfax County
County Seat:
No
Area (mi²):
9.985
State:
Virginia

Union Mill is a CDP located in Fairfax County, Virginia. Union Mill has a 2025 population of 5,378. Union Mill is currently growing at a rate of 7.15% annually and its population has increased by 23.29% since the most recent census, which recorded a population of 4,362 in 2020.

The average household income in Union Mill is $302,844 with a poverty rate of 4.14%.The median age in Union Mill is 45.2 years: 45.9 years for males, and 45 years for females.

5.4K
Total Population
539
Density (mi²)
359 7.15%
Growth

Union Mill Population

Union Mill Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Union Mill includes 47.83% White, 40.45% Asian, and smaller percentages for other race, Black or African American and multiracial populations.

Population by Race

White (47.8%)

Asian (40.5%)

Two or more races (8.6%)

Other race (2.2%)

Black or African American (0.9%)

Race
Population
Percentage (of total)
White2,08147.83%
Asian1,76040.45%
Two or more races3768.64%
Other race952.18%
Black or African American390.9%

Union Mill Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Union Mill's average per capita income is $112,647. Household income levels show a median of $245,265. The poverty rate stands at 4.14%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median
Mean
Families$250,001$339,687
Married Families$250,001-
Households$245,265$302,844
Non Families$53,750$95,743

$112,647

Average Income

$245,265

Median Household Income

4.14%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)