Residential delivery area · Virginia
ZIP Code 22031: Fairfax, VA
ZIP code 22031 uses the postal name Fairfax, Virginia and lies mostly in Fairfax County (82% of its land) with the rest in Fairfax city (Census 2020 ZIP-county file). About 37,000 people live there (Census Bureau, ACS 2020-2024), the 3rd most populous of Fairfax's 5 residential ZIP codes. Median household income is $134,577 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Mantua (33%), Merrifield (26%), Fairfax (18%), Oakton (12%) and Woodburn (9%), and 3% in smaller places.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Fairfax · 5 residential ZIPs
- County
- Fairfax County (82%); Fairfax city (18%)
- Census places
- Mantua (33%) census-designated place; Merrifield (26%) census-designated place; Fairfax (18%); Oakton (12%) census-designated place
- Metro area
- Washington-Arlington-Alexandria, DC-VA-MD-WV
- House district
- VA-11 119th Congress
- State
- Virginia
- Time zone
- Eastern
- Land area
- 7.1 sq mi · 5,230 people per sq mi
Where is ZIP code 22031?
22031 centers on 38.859°, -77.260° and covers 7.1 square miles of land plus 0.1 of water. It borders 7 ZIP codes: 22180, 22003, 22032, 22042, 22181, 22124, 22030.
The map draws ZIP code areas only. For the streets inside 22031, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 22031 compare with the rest of Fairfax?
| Measure | 22031 | In Fairfax | In Fairfax County | In VA |
|---|---|---|---|---|
| People (ACS 2020-2024) | 37,276 | 3rd of 5 | 9th of 47 | 62nd of 903 |
| Median household income | $135k | 4th of 4 | 34th of 46 | 77th of 461 |
| Median home value | $724k | 3rd of 4 | 23rd of 46 | 47th of 552 |
Its median household income is higher than in 94% of U.S. residential ZIP codes, and it is denser than 94% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 22031?
The 2020 Census counted 35,256 people in 22031; the ACS, which samples households over 2020-2024, estimates 37,276. Between the 2010 and 2020 censuses its population grew 18.3% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 37,276
- 2020 Census count
- 35,256+18.3% since 2010 (29,795)
- Households
- 14,825
- Median age
- 35.3
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 22031?
Of the 37,276 people the ACS estimates in 22031, 21.5% are under 18 and 11.5% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (47.1%), then Asian (not Hispanic) (30.7%).
- Under 1821.5%
- 18 to 6467.0%
- 65 and older11.5%
- White, not Hispanic47.1%
- Asian, not Hispanic30.7%
- Hispanic or Latino10.5%
- Black, not Hispanic6.3%
- Other or two or more5.4%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 22031 earn?
Median household income is $134,577 (ACS 2020-2024), the 34th highest of the 46 ranked ZIP codes in Fairfax County. It is not measurably different from 2015-2019 ($137,249 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $134,577
- Income per person
- $70,000
- Below the poverty line
- 5.9%
- Unemployed (of the labor force)
- 3.0%
- Adults 25+ with a bachelor's degree
- 73.6%
- Adjusted gross income per tax return, 2022
- $123,49817,790 returns; wages 74% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 22031?
FHFA's house price index for 22031, built from repeat sales and appraisals of the same homes, rose 56% from 2015 to 2025 and rose 38% from 2020 to 2025, and moved +5.2% in 2025.
- Median home value (owners' estimate)
- $723,600
- Median gross rent
- $2,258
- Homes owned by their occupants
- 48.4%
- Housing units
- 15,431
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 22031?
1,545 business establishments had a location in this ZIP code in 2023, 54 more than in 2018; the most are in health care and social assistance (ZIP Code Business Patterns).
- Health care and social assistance312
- Professional, scientific, and technical services268
- Other services (except public administration)176
- Retail trade161
- Accommodation and food services122
- Construction120
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 22031?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 22180 | Vienna | 26,568 | $177k | 2.5 mi |
| 22003 | Annandale | 57,755 | $139k | 3.2 mi |
| 22032 | Fairfax | 29,240 | $178k | 3.3 mi |
| 22042 | Falls Church | 35,483 | $138k | 3.6 mi |
| 22181 | Vienna | 15,760 | $212k | 3.6 mi |
| 22124 | Oakton | 18,091 | $218k | 4.5 mi |
| 22030 | Fairfax | 61,332 | $140k | 4.6 mi |
| 22027 | Dunn Loring | 1,939 | $250k+ | 3.2 mi (near) |
| 22043 | Falls Church | 25,750 | $146k | 4.5 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.