Union Mill

Population: 4,351
Median household income: $245,265
Median home value: $942,400

Union Mill is a community in Fairfax County, Virginia, home to 4,351 residents. The median household income of $245,265 is above the Fairfax County median ($150,113).

From 2020 to 2023, Union Mill's population held roughly steady from 4,362 to 4,351, while its median home value rose 15.9% from $812,900 to $942,400.

The typical home was built around 1988. 4.1% of residents live below the poverty line.

Demographics

ACS 2019–2023

Population: 4,351
Median age: 45.2 yrs
Median household income: $245,265
Median home value: $942,400
Median gross rent: $2,581
Housing units: 1,411
Homeownership rate: 93.0%
Bachelor's degree or higher: 73.7%
Unemployment rate: 1.7%

Trends

ACS 5-year · 2019–2023

Population

4,3624,351

Median household income

$201,000$245,265

Median home value

$812,900$942,400

Median gross rent

$2,140$2,581

Year	Population	Median household income	Median home value	Median gross rent
2020	4,362	$201,000	$812,900	$2,140
2021	4,574	$219,519	$855,800	$2,184
2022	4,302	$238,667	$907,200	$2,516
2023	4,351	$245,265	$942,400	$2,581

Each year is a US Census Bureau ACS 5-year estimate ending that year.

Age distribution

Under 53.4%

5 to 1719.4%

18 to 248.4%

25 to 347.0%

35 to 4411.5%

45 to 5417.0%

55 to 6412.4%

65 to 7412.6%

75 and over8.3%

	Count	Share
Under 5	149	3.4%
5 to 17	845	19.4%
18 to 24	366	8.4%
25 to 34	304	7.0%
35 to 44	499	11.5%
45 to 54	739	17.0%
55 to 64	541	12.4%
65 to 74	547	12.6%
75 and over	361	8.3%

Race & ethnicity

	Count	Share
White (non-Hispanic)	2,049	47.1%
Black or African American	39	0.9%
American Indian & Alaska Native	0	0.0%
Asian	1,760	40.5%
Native Hawaiian & Pacific Islander	0	0.0%
Some other race	29	0.7%
Two or more races	195	4.5%
Hispanic or Latino (any race)	279	6.4%

Educational attainment (age 25+)

No high school diploma2.0%

High school graduate11.0%

Some college or associate's13.3%

Bachelor's degree40.8%

Graduate or professional degree32.8%

	Count	Share
No high school diploma	61	2.0%
High school graduate	329	11.0%
Some college or associate's	398	13.3%
Bachelor's degree	1,221	40.8%
Graduate or professional degree	982	32.8%

Commute to work

Mean travel time to work: 34 min

Drove alone61.5%

Carpooled6.2%

Public transit1.4%

Walked2.4%

Bicycle0.0%

Worked from home27.4%

Other means1.0%

How workers get to work

	Count	Share
Drove alone	1,264	61.5%
Carpooled	128	6.2%
Public transit	29	1.4%
Walked	50	2.4%
Bicycle	0	0.0%
Worked from home	563	27.4%
Other means	20	1.0%

Travel time

	Count	Share
Under 15 min	137	9.2%
15 to 29 min	549	36.8%
30 to 44 min	493	33.1%
45 to 59 min	134	9.0%
60+ min	178	11.9%

Households

Average household size: 3.14
Poverty rate: 4.1% (180 of 4,351)

	Count	Share
Family households	1,176	84.8%
Nonfamily households	211	15.2%

Housing

Median year structure built: 1988

Occupancy

	Count	Share
Occupied	1,387	98.3%
Vacant	24	1.7%

Tenure (of occupied units)

	Count	Share
Owner-occupied	1,290	93.0%
Renter-occupied	97	7.0%

1-unit, detached92.3%

1-unit, attached7.7%

2 to 4 units0.0%

5 to 19 units0.0%

20 or more units0.0%

Mobile home & other0.0%

Units in structure

	Count	Share
1-unit, detached	1,303	92.3%
1-unit, attached	108	7.7%
2 to 4 units	0	0.0%
5 to 19 units	0	0.0%
20 or more units	0	0.0%
Mobile home & other	0	0.0%

Geography

Place GEOID: 5180029
Type (LSAD): 57
Land area: 9.99 sq mi
Water area: 0.1 sq mi
Center point: 38.8013, -77.3871