ZIP Code 21161

21161 is one of Maryland's ZIP codes, delivering to addresses in White Hall, Harford County.

City: White Hall
County: Harford County
State: Maryland
Prefix: 211xx

Where this code sits

21161 is part of the 211xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to White Hall.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 21161 delivers to without sharing its boundary.

ZIP codes nearest 21161

The ZIP codes whose reference points sit closest to 21161.
ZIP code	Distance	Delivers to
ZIP code 21120	5.9 mi	Parkton, MD
ZIP code 21105	6.0 mi	Maryland Line, MD
ZIP code 21084	6.1 mi	Jarrettsville, MD
ZIP code 21111	6.8 mi	Monkton, MD
ZIP code 17352	7.6 mi	New Park, PA
ZIP code 17363	7.8 mi	Stewartstown, PA
ZIP code 17349	8.4 mi	New Freedom, PA
ZIP code 21053	8.6 mi	Freeland, 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 21161, plotted from its record coordinates.

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

Scope ZIP code 21161. 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.