ZIP Code 06420

06420 is one of Connecticut's ZIP codes, delivering to addresses in Salem, Southeastern Connecticut Planning Region.

City: Salem
Planning region: Southeastern Connecticut Planning Region
State: Connecticut
Prefix: 064xx

Where this code sits

06420 is part of the 064xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Salem.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 06420 delivers to without sharing its boundary.

ZIP codes nearest 06420

The ZIP codes whose reference points sit closest to 06420.
ZIP code	Distance	Delivers to
ZIP code 06370	4.6 mi	Oakdale, CT
ZIP code 06415	6.1 mi	Colchester, CT
ZIP code 06334	6.3 mi	Bozrah, CT
ZIP code 06353	6.4 mi	Montville, CT
ZIP code 06336	7.0 mi	Gilman, CT
ZIP code 06423	7.2 mi	East Haddam, CT
ZIP code 06382	8.6 mi	Uncasville, CT
ZIP code 06469	8.8 mi	Moodus, CT

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 06420, plotted from its record coordinates.

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

Scope ZIP code 06420. 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.