Gainesville, VA ZIP codes
Gainesville, Virginia has 2 ZIP codes, including 1 PO Box ZIP. They are in Prince William County.
- Population in these ZIPs
- 37,486
- Avg. median income
- $164,300population-weighted
- Typical home value
- $742,100population-weighted
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Gainesville, VA ZIP codes list
| ZIP code | County | Population | Median income | Typical home value |
|---|---|---|---|---|
| 20155 | Prince William County | 37,486 | $164,279 | $742,100 |
| 20156 PO Box | Prince William County | — | — | — |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities near Gainesville
- Bristow 2 mi
- Manassas 4 mi
- Nokesville 6 mi
- Haymarket 7 mi
- Catharpin 8 mi
- Clifton 8 mi
- Centreville 9 mi
- Broad Run 10 mi
- Chantilly 10 mi
- Catlett 11 mi
- Fairfax Station 12 mi
- Aldie 13 mi
Frequently asked questions
What county is Gainesville, Virginia in?
Gainesville ZIP codes are in Prince William County.
Which Gainesville ZIP codes are PO Boxes?
20156 is a PO Box or single-organization ZIP code; it has no residential delivery area.