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Zip Code 20121 — Centreville, VA

20121 is a ZIP Code associated with Centreville, VA, located within Fairfax. The postal region supports an estimated population of 27,788 residents across Data Pending housing units, with a population density of 1,238.8 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (38.817500, -77.460150)

Data MetricLocal Statistic
Postal / Zip Code20121
Primary CityCentreville
State / ProvinceVA
CountyFairfax
Total Population27,788
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density1,238.8 people/sq mi
TimezoneAmerica/New_York

How 20121 Compares

MetricZIP 20121Fairfax CountyVA State Average
Population27,7881,173,3528,705,380
Median IncomeData PendingN/AN/A
Population Density1,238.8 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 20120Centreville2.8 mi42,896N/A
Zip 20109Manassas4.1 mi45,444N/A
Zip 20124Clifton4.5 mi14,375N/A
Zip 20111Manassas5.0 mi38,124N/A
Zip 20110Manassas5.1 mi49,890N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →