ZIP code · Gainesville · Virginia · United States
ZIP code 20155 — Gainesville
ZIP code 20155 serves Gainesville, Virginia.
- Postal code
- 20155Single source Value from one source, not cross-checked.
- City
- Gainesville
- County
- Prince William FIPS 51153
- State
- Virginia
- Country
- United States
- Coordinates
- 38.8157, -77.6216 — precision precise (locality)
View on OpenStreetMap - Population
- 37,516 (ZCTA, ACS 5-year)
- Population density
- 1,473 / sq mi
- Land area
- 25.5 sq mi (66 km²) (ZCTA, ACS 5-year)
- Median household income
- $154,531
- Per-capita income
- $58,974
- Median age
- 40.2
- Households
- 12,534
- Housing units
- 12,833
- Median home value
- $630,400
- Median gross rent
- $2,648 / month
- Congressional district
- VA-10 (119th Congress)
- USDA hardiness zone
- 7a (0 to 5 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/New_York (UTC−5 / UTC−4 DST)
Tools: compare 20155 with another ZIP · ZIPs within 25 miles · distance from 20155
Map of ZIP code 20155
Climate — monthly normals
Warmest month Jul (avg high 88°F), coldest Jan (avg low 24°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 42 | 46 | 54 | 66 | 74 | 83 | 88 | 85 | 78 | 67 | 56 | 47 |
| Avg low °F | 24 | 26 | 32 | 43 | 54 | 64 | 69 | 67 | 58 | 46 | 35 | 29 |
NOAA 1991–2020 climate normals from the nearest station: MANASSAS (9.0 mi) · NOAA NCEI
Places in ZIP 20155
- 13 schools
- 5 hospitals & clinics
- 13 doctors & dentists
- 2 pharmacies
- 4 supermarkets
- 77 restaurants & cafés
- 2 bars & pubs
- 3 parks
- 32 playgrounds
- 11 gyms & sports centres
- 4 post offices
- 10 places of worship
- 12 banks
- 12 gas stations
- 1 EV charging stations
Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page