Residential delivery area · Virginia
ZIP Code 20121: Bull Run (Centreville), VA
ZIP code 20121 is in Bull Run (postal name Centreville), Virginia, entirely in Fairfax County (Census 2020 ZIP-county file). About 28,000 people live there (Census Bureau, ACS 2020-2024), the less populous of Centreville's 2 residential ZIP codes. Median household income is $129,947 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Bull Run (54%) and Centreville (42%); 4% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Centreville · 2 residential ZIPs
- County
- Fairfax County
- Census places
- Bull Run (54%) census-designated place; Centreville (42%) census-designated place
- Metro area
- Washington-Arlington-Alexandria, DC-VA-MD-WV
- House districts
- VA-10 (58%), VA-11 (42%) 119th Congress, by share of land
- State
- Virginia
- Time zone
- Eastern
- Land area
- 8.7 sq mi · 3,209 people per sq mi
- PO Box ZIPs
- 20122 also use the name Centreville
Where is ZIP code 20121?
20121 centers on 38.811°, -77.463° and covers 8.7 square miles of land plus 0.5 of water. It borders 4 ZIP codes: 20120, 20109, 20124, 20111.
The map draws ZIP code areas only. For the streets inside 20121, 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 20121 compare with the rest of Centreville?
| Measure | 20121 | In Centreville | In Fairfax County | In VA |
|---|---|---|---|---|
| People (ACS 2020-2024) | 27,788 | 2nd of 2 | 24th of 47 | 118th of 903 |
| Median household income | $130k | 2nd of 2 | 35th of 46 | 82nd of 461 |
| Median home value | $520k | 2nd of 2 | 44th of 46 | 107th of 552 |
Its median household income is higher than in 93% of U.S. residential ZIP codes, and it is denser than 89% 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 20121?
The 2020 Census counted 28,901 people in 20121; the ACS, which samples households over 2020-2024, estimates 27,788. Between the 2010 and 2020 censuses its population grew 3.3% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 27,788
- 2020 Census count
- 28,901+3.3% since 2010 (27,988)
- Households
- 9,891
- Median age
- 36.1
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 20121?
Of the 27,788 people the ACS estimates in 20121, 21.2% are under 18 and 8.5% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (32.5%), then Asian (not Hispanic) (26.9%).
- Under 1821.2%
- 18 to 6470.2%
- 65 and older8.5%
- White, not Hispanic32.5%
- Asian, not Hispanic26.9%
- Hispanic or Latino25.7%
- Black, not Hispanic9.7%
- Other or two or more5.2%
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 20121 earn?
Median household income is $129,947 (ACS 2020-2024), the 35th highest of the 46 ranked ZIP codes in Fairfax County. It is not measurably different from 2015-2019 ($128,753 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $129,947
- Income per person
- $55,491
- Below the poverty line
- 8.8%
- Unemployed (of the labor force)
- 3.4%
- Adults 25+ with a bachelor's degree
- 53.8%
- Adjusted gross income per tax return, 2022
- $86,66414,530 returns; wages 83% 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 20121?
FHFA's house price index for 20121, built from repeat sales and appraisals of the same homes, rose 57% from 2015 to 2025 and rose 41% from 2020 to 2025, and moved +8.3% in 2025.
- Median home value (owners' estimate)
- $520,200
- Median gross rent
- $2,289
- Homes owned by their occupants
- 70.0%
- Housing units
- 10,057
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 20121?
629 business establishments had a location in this ZIP code in 2023, 39 more than in 2018; the most are in health care and social assistance (ZIP Code Business Patterns).
- Health care and social assistance105
- Accommodation and food services104
- Professional, scientific, and technical services96
- Other services (except public administration)67
- Construction54
- Retail trade51
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 20121?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 20120 | Centreville | 42,896 | $153k | 3.4 mi |
| 20109 | Manassas | 45,444 | $90k | 3.8 mi |
| 20124 | Clifton | 14,375 | $221k | 4.4 mi |
| 20111 | Manassas | 38,124 | $114k | 4.7 mi |
| 20110 | Manassas | 49,890 | $119k | 4.7 mi (near) |
| 20151 | Chantilly | 22,610 | $158k | 6.0 mi (near) |
| 22033 | Fairfax | 39,526 | $144k | 6.1 mi (near) |
| 22035 | Fairfax | 0 | – | 6.2 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.