ZIP Code 20121

20121 is one of Virginia's ZIP codes, delivering to addresses in Centreville, Fairfax County.

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

Where this code sits

20121 is part of the 201xx range, the group of codes handled by one mail processing centre. Centreville is served by 3 ZIP codes in total.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 20121 delivers to without sharing its boundary.

ZIP codes nearest 20121

The ZIP codes whose reference points sit closest to 20121.
ZIP code	Distance	Delivers to
ZIP code 20120	1.8 mi	Centreville, VA
ZIP code 20113	3.4 mi	Manassas, VA
ZIP code 20111	3.4 mi	Manassas, VA
ZIP code 20109	4.2 mi	Manassas, VA
ZIP code 20151	4.7 mi	Chantilly, VA
ZIP code 20124	4.8 mi	Clifton, VA
ZIP code 20110	5.2 mi	Manassas, VA
ZIP code 22033	5.4 mi	Fairfax, 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 20121, plotted from its record coordinates.

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

Scope ZIP code 20121. 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.