Postal reference / United States
20155Gainesville, Virginia
ZIP code 20155 is a United States postal code for Gainesville, Virginia. Its county association is Prince William County. The map reference point is at 38.8157, -77.6216.
- State / territory
- Virginia
- Recorded place name
- Gainesville
- County association
- Prince William
- Estimated coordinate
- 38.8157, -77.6216
View on OpenStreetMap - ZIP prefix
- 201 · 80 ZIP codes share it
- Data source
- GeoNames postal reference, snapshot September 26, 2026
GeoNames reference data. County associations may not include every intersecting county, place names are postal names rather than legal boundaries, and coordinates are approximate. This is not address validation.
Area
- Land area
- 25.475 sq mi (2023 Census Gazetteer)
Figures are for the ZIP Code Tabulation Area (ZCTA) that most closely matches this ZIP code, not an exact match to USPS delivery boundaries. Source: U.S. Census Bureau, 2023 Gazetteer + 2023 ACS 5-Year Estimates, retrieved 2026-09-27. How to read this data.
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Virginia directoryOther ZIP codes in Gainesville, VA
Gainesville has 2 ZIP codes in the reference dataset.
- 20156Prince William
Nearby ZIP code reference points
| ZIP code | Place | State | County association | Miles |
|---|---|---|---|---|
| 20168 | Haymarket | VA | Prince William | 0.8 |
| 20143 | Catharpin | VA | Prince William | 3.8 |
| 20169 | Haymarket | VA | Prince William | 3.8 |
| 20137 | Broad Run | VA | Fauquier | 5.0 |
| 20109 | Manassas | VA | Manassas (city) | 5.4 |
| 20136 | Bristow | VA | Prince William | 6.9 |
| 20182 | Nokesville | VA | Prince William | 8.2 |
| 20152 | Chantilly | VA | Loudoun | 8.3 |
Straight-line distance between reference points. Nearby points do not prove that ZIP areas touch.
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