ZIP Code 20156

20156 is one of Virginia's ZIP codes, delivering to addresses in Gainesville, Prince William County.

City: Gainesville
County: Prince William County
State: Virginia
Prefix: 201xx

Where this code sits

20156 is part of the 201xx range, the group of codes handled by one mail processing centre. Gainesville is served by 2 ZIP codes in total.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 20156 delivers to without sharing its boundary.

ZIP codes nearest 20156

The ZIP codes whose reference points sit closest to 20156.
ZIP code	Distance	Delivers to
ZIP code 20108	1.9 mi	Manassas, VA
ZIP code 20110	2.2 mi	Manassas, VA
ZIP code 20111	3.5 mi	Manassas, VA
ZIP code 20113	3.5 mi	Manassas, VA
ZIP code 20136	4.4 mi	Bristow, VA
ZIP code 20112	4.5 mi	Manassas, VA
ZIP code 20181	4.6 mi	Nokesville, VA
ZIP code 20109	5.9 mi	Manassas, VA

Straight-line distance between place reference points, not driving distance. Where a place has no Census Gazetteer point, its postal centroid is used instead.

Each point is the reference point for 20156, plotted from its record coordinates.

Reference points and footprint
Not an official NANPA boundary
Not a USPS delivery area

Scope ZIP code 20156. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. A ZIP code is a set of delivery routes, not an area; the point shown is a record coordinate, not a centre.