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US ZIP Code Profile

ZIP Code 22031
Fairfax, Virginia

ZIP code 22031 is in Fairfax, located in Fairfax County, Virginia, within the Washington-Arlington-Alexandria metro area. Its 2020 Census population was 35,256. The estimated median adjusted gross income per tax return is $76,653, and about 17% of filers report $200,000 or more.

2020 Population
35,256
Census ZCTA
County
Fairfax
FIPS 51059
Median income (est.)
$76,653
IRS SOI 2022
Land Area
6.827 mi²
+ 0.05 mi² water

01Location & Geography

Authoritative geographic identifiers from the U.S. Census Bureau, ANSI, and FIPS standards.

Primary CityFairfax, VA
CountyFairfax County (FIPS 51059)
StateVirginia (FIPS 51)
Metro Area (MSA)Washington-Arlington-Alexandria, DC-VA-MD-WV Metro Area (47900)
Census Region / DivisionSouth Region · South Atlantic Division
Coordinates38.85892, -77.26028
Land / Water Area6.827 mi² land · 0.05 mi² water

02Income & Economics

Distribution of the 17,790 individual tax returns filed in 22031 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
20.7%
$25K–$50K
15.3%
$50K–$75K
13.3%
$75K–$100K
10.6%
$100K–$200K
22.6%
$200K+
17.5%
The $200,000+ bracket accounts for 54% of 22031's total adjusted gross income, from 17% of returns — a concentration that drives the gap between the median ($76,653) and the average.
Estimated median = median adjusted gross income per tax return, interpolated from IRS SOI brackets. Differs from U.S. Census household income.

03Income Over Time

Year-over-year change in 22031's IRS income metrics, 2020–2022.

Median income (2021→2022)
$76,653
▲ 4.8%
Filers earning $200K+
17.5%
▲ 0.5 pt
Total filers
17,790
▲ 3.6%
GET /zipc/v2/zipcodes/22031/soi?year=… $67K 2020 $73K 2021 $77K 2022
Median = adjusted gross income per return, interpolated from IRS SOI brackets. Figures are nominal (not inflation-adjusted).

04Population Trend

Decennial U.S. Census population for the 22031 ZCTA.

2000
26,768
 
2010
29,795
▲ +11.3%
2020
35,256
▲ +18.3%

05Nearby ZIP Codes — Live Radius Search

Drag the slider to filter ZIP codes by distance from 22031. Powered by the same radius endpoint developers call from the API.

GET /zipc/v2/radius

ZIP codes within range of 22031

Fairfax and its immediate neighbors, sorted by distance.

3 mi
GET /zipc/v2/distance

Distance from 22031 to any ZIP

Enter a 5-digit ZIP to calculate the distance.

06USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortB
USPS Finance Number513096
City AliasesFairfax

07Frequently Asked Questions

What county is ZIP code 22031 in?

ZIP code 22031 is in Fairfax County, Virginia (county FIPS code 51059).

What city is ZIP code 22031?

The primary USPS city for 22031 is Fairfax, VA.

What metro area (MSA) is 22031 in?

22031 is part of the Washington-Arlington-Alexandria, DC-VA-MD-WV Metro Area (MSA code 47900).

What is the population of ZIP code 22031?

The 2020 Census population of 22031 was 35,256 residents.

What is the median income in ZIP code 22031?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 22031 is about $76,653, with around 17% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.