ZIP Code 21154

21154 is one of Maryland's ZIP codes, delivering to addresses in Street, Harford County.

City: Street
County: Harford County
State: Maryland
Prefix: 211xx

Where this code sits

21154 is part of the 211xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Street.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 21154 delivers to without sharing its boundary.

ZIP codes nearest 21154

The ZIP codes whose reference points sit closest to 21154.
ZIP code	Distance	Delivers to
ZIP code 21132	3.4 mi	Pylesville, MD
ZIP code 21160	4.6 mi	Whiteford, MD
ZIP code 21050	5.9 mi	Forest Hill, MD
ZIP code 21084	5.9 mi	Jarrettsville, MD
ZIP code 17314	6.7 mi	Delta, PA
ZIP code 17321	7.4 mi	Fawn Grove, PA
ZIP code 21034	7.6 mi	Darlington, MD
ZIP code 21014	8.2 mi	Bel Air, 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 21154, plotted from its record coordinates.

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

Scope ZIP code 21154. 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.