ZIP Code 20131

20131 is one of Virginia's ZIP codes, delivering to addresses in Philomont, Loudoun County.

City: Philomont
County: Loudoun County
State: Virginia
Prefix: 201xx

Where this code sits

20131 is part of the 201xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Philomont.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 20131 delivers to without sharing its boundary.

ZIP codes nearest 20131

The ZIP codes whose reference points sit closest to 20131.
ZIP code	Distance	Delivers to
ZIP code 20160	4.1 mi	Lincoln, VA
ZIP code 20141	4.5 mi	Round Hill, VA
ZIP code 20142	5.3 mi	Round Hill, VA
ZIP code 20102	5.6 mi	Dulles, VA
ZIP code 20104	5.6 mi	Dulles, VA
ZIP code 20146	5.6 mi	Ashburn, VA
ZIP code 20135	5.8 mi	Bluemont, VA
ZIP code 20132	5.9 mi	Purcellville, 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 20131, plotted from its record coordinates.

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

Scope ZIP code 20131. 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.