ZIP Code 06456

06456 is one of Connecticut's ZIP codes, delivering to addresses in Middle Haddam, Lower Connecticut River Valley Planning Region.

City: Middle Haddam
Planning region: Lower Connecticut River Valley Planning Region
State: Connecticut
Prefix: 064xx

Where this code sits

06456 is part of the 064xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Middle Haddam.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 06456 delivers to without sharing its boundary.

ZIP codes nearest 06456

The ZIP codes whose reference points sit closest to 06456.
ZIP code	Distance	Delivers to
ZIP code 06414	1.0 mi	Cobalt, CT
ZIP code 06424	2.6 mi	East Hampton, CT
ZIP code 06480	3.9 mi	Portland, CT
ZIP code 06459	5.6 mi	Middletown, CT
ZIP code 06457	6.0 mi	Middletown, CT
ZIP code 06441	6.1 mi	Higganum, CT
ZIP code 06469	6.4 mi	Moodus, CT
ZIP code 06438	6.7 mi	Haddam, 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 06456, plotted from its record coordinates.

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

Scope ZIP code 06456. 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.