ZIP Code 20191

20191 is one of Virginia's ZIP codes, delivering to addresses in Reston, Fairfax County.

City: Reston
County: Fairfax County
State: Virginia
Prefix: 201xx

Where this code sits

20191 is part of the 201xx range, the group of codes handled by one mail processing centre. Reston is served by 6 ZIP codes in total.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 20191 delivers to without sharing its boundary.

ZIP codes nearest 20191

The ZIP codes whose reference points sit closest to 20191.
ZIP code	Distance	Delivers to
ZIP code 20190	2.1 mi	Reston, VA
ZIP code 20171	2.2 mi	Herndon, VA
ZIP code 20172	3.2 mi	Herndon, VA
ZIP code 22095	3.2 mi	Herndon, VA
ZIP code 20194	3.4 mi	Reston, VA
ZIP code 22124	3.6 mi	Oakton, VA
ZIP code 20170	3.7 mi	Herndon, VA
ZIP code 22181	4.2 mi	Vienna, 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 20191, plotted from its record coordinates.

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

Scope ZIP code 20191. 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.