ZIP Code 21075

21075 is one of Maryland's ZIP codes, delivering to addresses in Elkridge, Howard County.

City: Elkridge
County: Howard County
State: Maryland
Prefix: 210xx

Where this code sits

21075 is part of the 210xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Elkridge.

Elkridge Maryland ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 21075 delivers to without sharing its boundary.

ZIP codes nearest 21075

The ZIP codes whose reference points sit closest to 21075.
ZIP code	Distance	Delivers to
ZIP code 21227	3.5 mi	Halethorpe, MD
ZIP code 21076	3.9 mi	Hanover, MD
ZIP code 21250	4.2 mi	Baltimore, MD
ZIP code 21043	4.2 mi	Ellicott City, MD
ZIP code 21045	4.2 mi	Columbia, MD
ZIP code 20794	4.5 mi	Jessup, MD
ZIP code 21077	4.5 mi	Harmans, MD
ZIP code 21090	4.6 mi	Linthicum Heights, 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 21075, plotted from its record coordinates.

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

Scope ZIP code 21075. 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.