What kinds of homes are in Union Mill, VA?

Name: Types of homes in Union Mill, VA, 2020–2024
Creator: US Census Bureau
License: https://www.census.gov/data/developers/about/terms-of-service.html

Union Mill, VA has 1,440 (±195) homes (2020–2024 American Community Survey).

That is about 144 homes per square mile of land.

92.6% are detached single-family houses.

0.0% are in buildings of two to four units.

0.0% are in buildings of five or more units.

Figures last updated on November 12, 2026.

Housing units: 1,440 (±195)
Detached houses: 92.6%
2–4 unit buildings: 0.0%
5+ unit buildings: 0.0%

Homes in Union Mill by building size

Housing units by units in structure, 2020–2024
Building type	Union Mill	Fairfax County	Virginia	United States
Single-family, detached	92.6% (±5.4 points)	45.5%	61.3%	61.3%
Single-family, attached (townhouse, rowhouse)	7.4% (±5.4 points)	22.7%	11.3%	6.2%
2 units	0.0% (±2.7 points)	0.7%	1.6%	3.4%
3 or 4 units	0.0% (±2.7 points)	1.5%	2.9%	4.3%
5 to 9 units	0.0% (±2.7 points)	4.9%	4.4%	4.5%
10 to 19 units	0.0% (±2.7 points)	9.3%	5.2%	4.3%
20 or more units	0.0% (±2.7 points)	14.7%	8.9%	10.3%
Mobile home	0.0% (±2.7 points)	0.5%	4.3%	5.6%
Boat, RV, van, etc.	0.0% (±2.7 points)	0.1%	0.0%	0.1%

In Union Mill, the share of homes in buildings of five or more units is lower than in Fairfax County (28.9%).

It is also lower than in Virginia (18.5%).

It is lower than the national figure (19.1%).

Homes in buildings of 5 or more units in places near Union Mill

Nearest places with a published estimate, compared with Union Mill
Place	Distance	Homes in buildings of 5 or more units	Compared with this place
Union Mill	—	0.0% (±4.7 points)	—
Clifton	1.5 mi	0.0% (±54.2 points)	Not measurably different
Fairfax Station	2.7 mi	0.0% (±1.7 points)	Not measurably different
Braddock	2.7 mi	13.9% (±8.4 points)	Higher
Yorkshire	3.5 mi	22.0% (±7.9 points)	Higher
Fair Lakes	3.6 mi	42.7% (±6.8 points)	Higher
Manassas Park	3.7 mi	21.5% (±4.3 points)	Higher
Centreville	3.9 mi	19.1% (±1.7 points)	Higher
Fair Oaks	4.7 mi	58.8% (±4.8 points)	Higher

Nearby places with a measurably higher figure: Braddock, VA (13.9%), Yorkshire, VA (22.0%), Fair Lakes, VA (42.7%).

Distance is measured in a straight line between the Census Bureau’s internal points for each place.

Homes in buildings of 5 or more units across Fairfax County, place by place

Rank	Place	Homes in buildings of 5 or more units
55 (tie)	Great Falls	0.0% (±1.4 points)
55 (tie)	Great Falls Crossing	0.0% (±13.2 points)
55 (tie)	Hayfield	0.0% (±4.3 points)
55 (tie)	Mason Neck	0.0% (±9.2 points)
55 (tie)	Ravensworth	0.0% (±7.6 points)
55 (tie)	South Run	0.0% (±3.5 points)
55 (tie)	Union Mill	0.0% (±4.7 points)
55 (tie)	Wakefield (community)	0.0% (±1.9 points)
55 (tie)	Wolf Trap	0.0% (±1.2 points)

Showing 9 of 69 places in Fairfax County, ranked from highest to lowest.

Union Mill is a census-designated place: an unincorporated community the Census Bureau draws for statistics, with no municipal government of its own.

Survey years: 2020–2024 (American Community Survey 5-year estimates).

Margins of error are at the 90% confidence level.

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Questions about Union Mill

How many homes are in Union Mill?

Union Mill, VA has an estimated 1,440 (±195) housing units, occupied and vacant (2020–2024 American Community Survey).

Are most homes in Union Mill houses or apartments?

92.6% are detached houses and 7.4% attached houses, while 0.0% are in buildings of two or more units.

How many two-family and small multifamily homes are in Union Mill?

0.0% of homes in Union Mill are in buildings of two to four units, the small rental buildings that are often owner-occupied.

Sources

Selected Housing Characteristics (DP04), 2020–2024 ACS 5-year estimates — Union Mill CDP, Virginia

To check these figures in the Census Bureau’s own API, request the variables below from the 2024 ACS 5-year data profile (acs/acs5/profile) for Union Mill CDP, Virginia (place:80029, in state:51).

Each estimate (E or PE) has a margin of error beside it (M or PM).

The API needs a free key.

Request a Census API key.

DP04_0001E, DP04_0001M, DP04_0007PE, DP04_0007PM, DP04_0008PE, DP04_0008PM, DP04_0009PE, DP04_0009PM, DP04_0010PE, DP04_0010PM, DP04_0011PE, DP04_0011PM, DP04_0012PE, DP04_0012PM, DP04_0013PE, DP04_0013PM, DP04_0014PE, DP04_0014PM, DP04_0015PE, DP04_0015PM

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Figures are published by the US Census Bureau, HUD, the Bureau of Labor Statistics and the FBI; Seayora reproduces them and does not adjust them, except where a sentence says it compares dollar figures after inflation. They describe the whole place, not any one building or street, and are not an appraisal, a rent determination, a tax bill, a safety rating or legal advice.