ZIP Code 21157

21157 is one of Maryland's ZIP codes, delivering to addresses in Westminster, Carroll County.

City

Westminster

County

Carroll County

State

Maryland

Prefix

211xx

Where this code sits

21157 is part of the 211xx range, the group of codes handled by one mail processing centre. Westminster is served by 2 ZIP codes in total; the full list, with the county each falls in, is on the Westminster page.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 21157 delivers to without sharing its boundary.

ZIP codes nearest 21157

The ZIP codes whose reference points sit closest to 21157.
ZIP code	Distance	Delivers to
ZIP code 21158	3.9 mi	Westminster, MD
ZIP code 21048	5.9 mi	Finksburg, MD
ZIP code 21074	7.1 mi	Hampstead, MD
ZIP code 21776	7.3 mi	New Windsor, MD
ZIP code 21784	7.5 mi	Sykesville, MD
ZIP code 21791	8.1 mi	Union Bridge, MD
ZIP code 21102	8.9 mi	Manchester, MD
ZIP code 21155	9.8 mi	Upperco, MD

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 21157, plotted from its record coordinates.

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

Scope ZIP code 21157. 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.