ZIP Code 06231

06231 is one of Connecticut's ZIP codes, delivering to addresses in Amston, Capitol Planning Region.

City: Amston
Planning region: Capitol Planning Region
State: Connecticut
Prefix: 062xx

Where this code sits

06231 is part of the 062xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Amston.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 06231 delivers to without sharing its boundary.

ZIP codes nearest 06231

The ZIP codes whose reference points sit closest to 06231.
ZIP code	Distance	Delivers to
ZIP code 06474	3.8 mi	North Westchester, CT
ZIP code 06248	4.2 mi	Hebron, CT
ZIP code 06415	4.5 mi	Colchester, CT
ZIP code 06447	5.0 mi	Marlborough, CT
ZIP code 06237	5.6 mi	Columbia, CT
ZIP code 06249	6.2 mi	Lebanon, CT
ZIP code 06232	7.2 mi	Andover, CT
ZIP code 06424	8.3 mi	East Hampton, 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 06231, plotted from its record coordinates.

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

Scope ZIP code 06231. 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.