ZIP Code 21663

21663 is one of Maryland's ZIP codes, delivering to addresses in Saint Michaels, Talbot County.

City: Saint Michaels
County: Talbot County
State: Maryland
Prefix: 216xx

Where this code sits

21663 is part of the 216xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Saint Michaels.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 21663 delivers to without sharing its boundary.

ZIP codes nearest 21663

The ZIP codes whose reference points sit closest to 21663.
ZIP code	Distance	Delivers to
ZIP code 21653	3.2 mi	Newcomb, MD
ZIP code 21612	3.7 mi	Bozman, MD
ZIP code 21647	4.0 mi	Mcdaniel, MD
ZIP code 21676	4.2 mi	Wittman, MD
ZIP code 21624	4.6 mi	Claiborne, MD
ZIP code 21662	4.8 mi	Royal Oak, MD
ZIP code 21652	5.2 mi	Neavitt, MD
ZIP code 21665	6.5 mi	Sherwood, 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 21663, plotted from its record coordinates.

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

Scope ZIP code 21663. 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.