Zip Code 20151
Chantilly, Virginia — Fairfax County
📍 ZIP code 20151 is in Chantilly, Fairfax County, Virginia.
ZIP code 20151 is located in Chantilly, Fairfax County, Virginia. It is a zip code in the Eastern (EST/EDT) Time Zone with an estimated population of 22,502. The area code for ZIP code 20151 is 202.
Quick Answer
Zip code 20151 is in Chantilly, Virginia (Fairfax County). It has a population of 22,502, median household income of $143,422, and median home value of $647,400.
Population
22,502
Income
$143,422
Home Value
$647,400
Climate
88°F / 25°F
About Zip Code 20151
Zip code 20151 is located in Chantilly, Virginia, within Fairfax County. Home to approximately 22,502 residents, this area sits at an elevation of 284 ft and falls within the Eastern (EST/EDT) timezone. The local area code is 202.
The median household income is $143,422 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $647,400, and the cost of living index is 208 (108% above the national average of 100).
Summers average a high of 88°F while winters drop to 25°F. The area receives about 43 in of rain and 21 in of snow annually. The zip code covers 15.5 square miles of land area and 0.1 square miles of water.
Key Statistics
22,502
$143,422
$647,400
Eastern (EST/EDT)
202
284 ft
15.5 sq mi
40.7
6,966
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Compare With Nearby Zip Codes
| Metric | 20151 | 20120 | 20171 | 20152 | 22033 | 20191 |
|---|---|---|---|---|---|---|
| City | Chantilly, VA | Centreville, VA | Herndon, VA | Chantilly, VA | Chantilly, VA | Reston, VA |
| Population | 22,502 | 42,917 | 50,796 | 36,453 | 38,676 | 30,077 |
| Median Income | $143,422 | $149,844 | $166,154 | $191,392 | $134,532 | $141,019 |
| Home Value | $647,400 | $620,100 | $770,200 | $708,400 | $621,600 | $616,700 |
| Cost of Living | 208 | 207 | 240 | 241 | 199 | 199 |
| Median Age | 40.7 | 38.1 | 35.8 | 38.3 | 38.5 | 39.5 |
Cost of Living
100 = National Average. Chantilly's cost of living is 108% above the national average.
vs. State Avg
Above
Affordability
Expensive
Income-to-Home
4.5x
Demographics
Zip code 20151 has a population of 22,502 people with a median age of 40.7. There are 6,966 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Chantilly (20151) population trend from 2010 to 2024
↑ 13.2%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
88°F
25°F
43 in
21 in
Chantilly experiences warm summers with average highs around 88°F. Winters are cool with lows averaging 25°F. The area receives about 21 in of snow per year.
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Housing & Economy
Median Home Value
$647,400
Median Household Income
$143,422
With 6,966 housing units across 15.5 square miles, 20151 has a housing density of 449 units per square mile. The home price-to-income ratio is 4.5x.
Location & Geography
Latitude
38.8956°
Longitude
-77.4465°
Land Area
15.5 sq mi
Water Area
0.1 sq mi
Nearby Zip Codes
Zip codes closest to 20151 (Chantilly, VA) with distances:
All Zip Codes in Chantilly, VA
Other zip codes serving Chantilly:
ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 20151's $143,422. A way to compare Chantilly 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 20151 (Chantilly, 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 Chantilly, Virginia?
Chantilly, Virginia uses zip code 20151 along with 2 other zip codes.
What county is zip code 20151 in?
Zip code 20151 is located in Fairfax County, Virginia.
What is the population of zip code 20151?
The population of zip code 20151 is 22,502 with a median age of 40.7.
Is 20151 in Chantilly, Virginia?
Yes, zip code 20151 is in Chantilly, Fairfax County, Virginia. The area code is 202.
Frequently Asked Questions
What city is zip code 20151 in?
Zip code 20151 is in Chantilly, Virginia. It is part of Fairfax County and uses the Eastern (EST/EDT) timezone.
What is zip code 20151?
Zip code 20151 is a U.S. postal code in Chantilly, Virginia (Fairfax County). It has a population of 22,502 and covers 15.5 square miles.
What is the population of zip code 20151?
The population of zip code 20151 (Chantilly, VA) is 22,502 with a median age of 40.7. There are approximately 6,966 housing units in this area.
What is the median income in zip code 20151?
The median household income in zip code 20151 (Chantilly, VA) is $143,422 per year. The cost of living index is 208 (100 = national average).
What is the average home price in zip code 20151?
The median home value in zip code 20151 (Chantilly, VA) is $647,400. The cost of living index is 208 compared to the national average of 100.
What county is zip code 20151 in?
Zip code 20151 is located in Fairfax County, Virginia. The primary city is Chantilly.
What is the area code for zip code 20151?
Zip code 20151 in Chantilly, VA uses area code 202. It is located in the Eastern (EST/EDT) timezone.
Is zip code 20151 a good place to live?
Zip code 20151 (Chantilly, VA) has a cost of living index of 208 (100 = national average), a median household income of $143,422, and median home values of $647,400. The median age is 40.7. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 20151?
The cost of living index for zip code 20151 (Chantilly, VA) is 208, where 100 represents the national average. This area is above the national average. Median home value: $647,400.
What schools serve zip code 20151?
Zip code 20151 in Chantilly, 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.