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Zip Code 20155 — Gainesville, VA

20155 is a ZIP Code associated with Gainesville, VA, located within Prince William. The postal region supports an estimated population of 37,486 residents across Data Pending housing units, with a population density of 568.1 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (38.806460, -77.621450)

Data MetricLocal Statistic
Postal / Zip Code20155
Primary CityGainesville
State / ProvinceVA
CountyPrince William
Total Population37,486
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density568.1 people/sq mi
TimezoneAmerica/New_York

How 20155 Compares

MetricZIP 20155Prince William CountyVA State Average
Population37,486493,2418,705,380
Median IncomeData PendingN/AN/A
Population Density568.1 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 20169Haymarket4.7 mi28,089N/A
Zip 20143Catharpin4.9 mi1,070N/A
Zip 20109Manassas4.9 mi45,444N/A
Zip 20137Broad Run5.8 mi1,938N/A
Zip 20136Bristow6.0 mi32,325N/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 →