ZIP Code 20121

ZIP Code Tabulation Area in Fairfax County, Virginia.

Population: 27,507
Median household income: $133,024
Median home value: $488,200

ZIP Code 20121 (Fairfax County, Virginia) is home to about 27,507 residents. Its median household income of $133,024 runs below the Fairfax County figure of $150,113.

Between 2019 and 2023, ZIP Code 20121's population declined 6.5% from 29,426 to 27,507, while its median gross rent rose 21.7% from $1,840 to $2,240.

The largest age group is 5 to 17, 17.8% of residents. White (non-Hispanic) residents are the largest group, 36.1% of the population.

Demographics

ACS 2019–2023

Population: 27,507
Median age: 35.5 yrs
Median household income: $133,024
Median home value: $488,200
Median gross rent: $2,240
Housing units: 9,968
Homeownership rate: 71.0%
Bachelor's degree or higher: 53.0%
Unemployment rate: 3.6%

Trends

ACS 5-year · 2019–2023

Population

29,42627,507

Median household income

$104,934$133,024

Median home value

$378,200$488,200

Median gross rent

$1,840$2,240

Year	Population	Median household income	Median home value	Median gross rent
2019	29,426	$104,934	$378,200	$1,840
2020	28,120	$107,933	$387,600	$1,895
2021	27,432	$117,065	$408,300	$1,959
2022	27,428	$128,682	$468,600	$2,128
2023	27,507	$133,024	$488,200	$2,240

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

Age distribution

Under 55.1%

5 to 1717.8%

18 to 248.6%

25 to 3417.6%

35 to 4416.9%

45 to 5414.0%

55 to 6411.2%

65 to 746.7%

75 and over2.2%

	Count	Share
Under 5	1,395	5.1%
5 to 17	4,883	17.8%
18 to 24	2,369	8.6%
25 to 34	4,846	17.6%
35 to 44	4,650	16.9%
45 to 54	3,851	14.0%
55 to 64	3,075	11.2%
65 to 74	1,833	6.7%
75 and over	605	2.2%

Race & ethnicity

	Count	Share
White (non-Hispanic)	9,924	36.1%
Black or African American	2,465	9.0%
American Indian & Alaska Native	8	0.0%
Asian	7,143	26.0%
Native Hawaiian & Pacific Islander	41	0.1%
Some other race	170	0.6%
Two or more races	1,337	4.9%
Hispanic or Latino (any race)	6,419	23.3%

Educational attainment (age 25+)

No high school diploma6.9%

High school graduate15.8%

Some college or associate's24.3%

Bachelor's degree33.3%

Graduate or professional degree19.7%

	Count	Share
No high school diploma	1,305	6.9%
High school graduate	2,984	15.8%
Some college or associate's	4,579	24.3%
Bachelor's degree	6,285	33.3%
Graduate or professional degree	3,707	19.7%

Commute to work

Mean travel time to work: 29 min

Drove alone68.4%

Carpooled7.7%

Public transit1.6%

Walked1.5%

Bicycle0.0%

Worked from home19.1%

Other means1.7%

How workers get to work

	Count	Share
Drove alone	10,994	68.4%
Carpooled	1,245	7.7%
Public transit	251	1.6%
Walked	234	1.5%
Bicycle	0	0.0%
Worked from home	3,072	19.1%
Other means	271	1.7%

Travel time

	Count	Share
Under 15 min	1,868	14.4%
15 to 29 min	5,343	41.1%
30 to 44 min	3,360	25.9%
45 to 59 min	1,254	9.6%
60+ min	1,170	9.0%

Households

Average household size: 2.83
Poverty rate: 6.2% (1,711 of 27,507)

	Count	Share
Family households	6,913	71.2%
Nonfamily households	2,790	28.8%

Housing

Median year structure built: 1991

Occupancy

	Count	Share
Occupied	9,703	97.3%
Vacant	265	2.7%

Tenure (of occupied units)

	Count	Share
Owner-occupied	6,888	71.0%
Renter-occupied	2,815	29.0%

1-unit, detached18.3%

1-unit, attached59.6%

2 to 4 units3.2%

5 to 19 units15.0%

20 or more units4.0%

Mobile home & other0.0%

Units in structure

	Count	Share
1-unit, detached	1,820	18.3%
1-unit, attached	5,939	59.6%
2 to 4 units	317	3.2%
5 to 19 units	1,498	15.0%
20 or more units	394	4.0%
Mobile home & other	0	0.0%

ZIP Code 20121

Demographics

Trends

Age distribution

Race & ethnicity

Educational attainment (age 25+)

Commute to work

Households

Housing

Geography

Counties this ZIP covers

Compare with nearby ZIP codes

National ZIP rankings

Nearby ZIP codes