ZIP Code 21690

21690 is one of Maryland's ZIP codes, delivering to addresses in Chestertown, Queen Anne's County.

City

Chestertown

County

Queen Anne's County

State

Maryland

Prefix

216xx

Where this code sits

21690 is part of the 216xx range, the group of codes handled by one mail processing centre. Chestertown is served by 2 ZIP codes in total; the full list, with the county each falls in, is on the Chestertown page.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 21690 delivers to without sharing its boundary.

ZIP codes nearest 21690

The ZIP codes whose reference points sit closest to 21690.
ZIP code	Distance	Delivers to
ZIP code 21656	0.0 mi	Price, MD
ZIP code 21617	2.9 mi	Centreville, MD
ZIP code 21658	3.5 mi	Queenstown, MD
ZIP code 21679	7.4 mi	Wye Mills, MD
ZIP code 21638	8.4 mi	Grasonville, MD
ZIP code 21657	8.7 mi	Queen Anne, MD
ZIP code 21623	9.5 mi	Church Hill, MD
ZIP code 21661	10 mi	Rock Hall, 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 21690, plotted from its record coordinates.

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

Scope ZIP code 21690. 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.