ZIP Code 21102

21102 is one of Maryland's ZIP codes, delivering to addresses in Manchester, Carroll County.

City: Manchester
County: Carroll County
State: Maryland
Prefix: 211xx

Where this code sits

21102 is part of the 211xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Manchester.

Manchester Maryland ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 21102 delivers to without sharing its boundary.

ZIP codes nearest 21102

The ZIP codes whose reference points sit closest to 21102.
ZIP code	Distance	Delivers to
ZIP code 21088	4.0 mi	Lineboro, MD
ZIP code 21074	4.4 mi	Hampstead, MD
ZIP code 17329	7.1 mi	Glenville, PA
ZIP code 21158	8.6 mi	Westminster, MD
ZIP code 21157	8.9 mi	Westminster, MD
ZIP code 21155	9.0 mi	Upperco, MD
ZIP code 21053	9.2 mi	Freeland, MD
ZIP code 17331	9.5 mi	Hanover, PA

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 21102, plotted from its record coordinates.

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

Scope ZIP code 21102. 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.