ZIP Code 21620

21620 is one of Maryland's ZIP codes, delivering to addresses in Chestertown, Kent County.

City: Chestertown
County: Kent County
State: Maryland
Prefix: 216xx

Where this code sits

21620 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.

Chestertown Maryland ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 21620 delivers to without sharing its boundary.

ZIP codes nearest 21620

The ZIP codes whose reference points sit closest to 21620.
ZIP code	Distance	Delivers to
ZIP code 21678	5.9 mi	Worton, MD
ZIP code 21623	6.7 mi	Church Hill, MD
ZIP code 21645	7.9 mi	Kennedyville, MD
ZIP code 21667	8.3 mi	Still Pond, MD
ZIP code 21628	8.7 mi	Crumpton, MD
ZIP code 21661	9.7 mi	Rock Hall, MD
ZIP code 21610	11 mi	Betterton, MD
ZIP code 21651	11 mi	Millington, 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 21620, plotted from its record coordinates.

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

Scope ZIP code 21620. 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.