Union Mill

Census-designated place in Fairfax County, Virginia

Aerial view of Union Mill, Virginia
Aerial view: USDA NAIP · USGS The National Map (public domain)

Union Mill is an unincorporated community (census-designated place) in Fairfax County, Virginia, with 4,997 residents (2020 Census). It sits at 302 ft (92 m) above sea level. The nearest town is Clifton, 1.5 miles S.

About Union Mill

Union Mill is a census designated place in Fairfax County, Virginia, United States.

As of the 2020 census, Union Mill had a population of 4,997.

Text: Wikipedia · CC BY-SA 4.0

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Living in Union Mill

Median household income
$250,001
Median home value
$961,400
Median rent
$2,365/mo
Median age
47.3
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Map of Union Mill

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Union Mill, VA population

Union Mill had 4,997 residents in the 2020 Census.

2020 Census4,997
Density500 per sq mi (193 per km²)

Source: U.S. Census Bureau, Decennial Census.

Union Mill at a glance

StateVirginia (VA)
CountyFairfax County
TypeCensus-designated place
Population4,997 (2020)
Land area9.98 sq mi (25.9 km²)
Water area0.10 sq mi (0.25 km²)
Elevation302 ft (92 m)
Coordinates38.8013° N, 77.3871° W
ZIP code20124
Census code (GEOID)5180029

Sources: U.S. Census Bureau (Gazetteer, ZCTA), USGS GNIS, Wikidata.

Towns near Union Mill

Straight-line distance between town centers.

Frequently asked questions about Union Mill

What county is Union Mill in?

Union Mill is in Fairfax County, Virginia.

What is the population of Union Mill, VA?

4,997 people lived in Union Mill at the 2020 Census.

What is the ZIP code of Union Mill, VA?

The ZIP code of Union Mill is 20124.

What is the elevation of Union Mill?

302 feet (92 m) above sea level.

What towns are near Union Mill?

Clifton (1.5 mi), Fairfax Station (2.7 mi), Braddock (2.7 mi), Yorkshire (3.5 mi), Fair Lakes (3.6 mi).

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