Zip Code 20121
Centreville, Virginia — Fairfax County
📍 ZIP code 20121 is in Centreville, Fairfax County, Virginia.
ZIP code 20121 is located in Centreville, Fairfax County, Virginia. It is a zip code in the Eastern (EST/EDT) Time Zone with an estimated population of 27,507. The area code for ZIP code 20121 is 202.
Quick Answer
Zip code 20121 is in Centreville, Virginia (Fairfax County). It has a population of 27,507, median household income of $133,024, and median home value of $488,200.
Population
27,507
Income
$133,024
Home Value
$488,200
Climate
88°F / 24°F
About Zip Code 20121
Zip code 20121 is located in Centreville, Virginia, within Fairfax County. Home to approximately 27,507 residents, this area sits at an elevation of 213 ft and falls within the Eastern (EST/EDT) timezone. The local area code is 202.
The median household income is $133,024 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $488,200, and the cost of living index is 169 (69% above the national average of 100).
Summers average a high of 88°F while winters drop to 24°F. The area receives about 45 in of rain and 10 in of snow annually. The zip code covers 8.7 square miles of land area and 0.5 square miles of water.
Key Statistics
27,507
$133,024
$488,200
Eastern (EST/EDT)
202
213 ft
8.7 sq mi
35.5
9,968
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Compare With Nearby Zip Codes
| Metric | 20121 | 20120 | 20109 | 20124 | 20110 | 20111 |
|---|---|---|---|---|---|---|
| City | Centreville, VA | Centreville, VA | Manassas, VA | Centreville, VA | Manassas, VA | Manassas, VA |
| Population | 27,507 | 42,917 | 44,161 | 14,557 | 49,452 | 38,153 |
| Median Income | $133,024 | $149,844 | $88,966 | $218,942 | $120,397 | $109,785 |
| Home Value | $488,200 | $620,100 | $411,700 | $870,200 | $445,300 | $449,400 |
| Cost of Living | 169 | 207 | 124 | 250 | 148 | 150 |
| Median Age | 35.5 | 38.1 | 33.6 | 47.2 | 34.9 | 34.9 |
Cost of Living
100 = National Average. Centreville's cost of living is 69% above the national average.
vs. State Avg
Above
Affordability
Expensive
Income-to-Home
3.7x
Demographics
Zip code 20121 has a population of 27,507 people with a median age of 35.5. There are 9,968 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Centreville (20121) population trend from 2010 to 2024
↓ -44.5%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
88°F
24°F
45 in
10 in
Centreville experiences warm summers with average highs around 88°F. Winters are cool with lows averaging 24°F. The area receives about 10 in of snow per year.
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Housing & Economy
Median Home Value
$488,200
Median Household Income
$133,024
With 9,968 housing units across 8.7 square miles, 20121 has a housing density of 1,146 units per square mile. The home price-to-income ratio is 3.7x.
Location & Geography
Latitude
38.8110°
Longitude
-77.4629°
Land Area
8.7 sq mi
Water Area
0.5 sq mi
Nearby Zip Codes
Zip codes closest to 20121 (Centreville, VA) with distances:
All Zip Codes in Centreville, VA
Other zip codes serving Centreville:
ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 20121's $133,024. A way to compare Centreville to economically similar communities elsewhere in the country.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
ZIP Codes with Similar Demographics
The five U.S. ZIP codes whose racial and ethnic composition most closely matches 20121 (Centreville, VA). Similarity is measured by cosine distance on the five-category ACS demographic vector.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
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People Also Ask
What zip code is Centreville, Virginia?
Centreville, Virginia uses zip code 20121 along with 2 other zip codes.
What county is zip code 20121 in?
Zip code 20121 is located in Fairfax County, Virginia.
What is the population of zip code 20121?
The population of zip code 20121 is 27,507 with a median age of 35.5.
Is 20121 in Centreville, Virginia?
Yes, zip code 20121 is in Centreville, Fairfax County, Virginia. The area code is 202.
Frequently Asked Questions
What city is zip code 20121 in?
Zip code 20121 is in Centreville, Virginia. It is part of Fairfax County and uses the Eastern (EST/EDT) timezone.
What is zip code 20121?
Zip code 20121 is a U.S. postal code in Centreville, Virginia (Fairfax County). It has a population of 27,507 and covers 8.7 square miles.
What is the population of zip code 20121?
The population of zip code 20121 (Centreville, VA) is 27,507 with a median age of 35.5. There are approximately 9,968 housing units in this area.
What is the median income in zip code 20121?
The median household income in zip code 20121 (Centreville, VA) is $133,024 per year. The cost of living index is 169 (100 = national average).
What is the average home price in zip code 20121?
The median home value in zip code 20121 (Centreville, VA) is $488,200. The cost of living index is 169 compared to the national average of 100.
What county is zip code 20121 in?
Zip code 20121 is located in Fairfax County, Virginia. The primary city is Centreville.
What is the area code for zip code 20121?
Zip code 20121 in Centreville, VA uses area code 202. It is located in the Eastern (EST/EDT) timezone.
Is zip code 20121 a good place to live?
Zip code 20121 (Centreville, VA) has a cost of living index of 169 (100 = national average), a median household income of $133,024, and median home values of $488,200. The median age is 35.5. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 20121?
The cost of living index for zip code 20121 (Centreville, VA) is 169, where 100 represents the national average. This area is above the national average. Median home value: $488,200.
What schools serve zip code 20121?
Zip code 20121 in Centreville, Virginia is served by the local school district of Fairfax County. For specific school information, check your state's department of education or GreatSchools.org.
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.
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Data Sources
- Population, income, housing, age, and demographics
- U.S. Census Bureau, American Community Survey 5-Year Estimates, 2019-2023 vintage.
- ZIP to city and county mapping
- USPS and HUD-USPS ZIP-County Crosswalk.
- Time zones and area codes
- IANA tz database and NANPA.
- Elevation
- U.S. Geological Survey National Elevation Dataset (NED), via the USGS Elevation Point Query Service. Mapped to each ZCTA centroid coordinates. Last refreshed 2026-05-19.
- Last refreshed
- 2026-05-18.