ZIP Code 06831

06831 is one of Connecticut's ZIP codes, delivering to addresses in Greenwich, Western Connecticut Planning Region.

City

Greenwich

Planning region

Western Connecticut Planning Region

State

Connecticut

Prefix

068xx

Where this code sits

06831 is part of the 068xx range, the group of codes handled by one mail processing centre. Greenwich is served by 3 ZIP codes in total; the full list, with the planning region each falls in, is on the Greenwich page.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 06831 delivers to without sharing its boundary.

ZIP codes nearest 06831

The ZIP codes whose reference points sit closest to 06831.
ZIP code	Distance	Delivers to
ZIP code 06830	1.9 mi	Greenwich, CT
ZIP code 10573	2.5 mi	Port Chester, NY
ZIP code 06836	2.5 mi	Greenwich, CT
ZIP code 10577	3.1 mi	Purchase, NY
ZIP code 06807	3.4 mi	Cos Cob, CT
ZIP code 10604	4.2 mi	West Harrison, NY
ZIP code 06878	4.2 mi	Riverside, CT
ZIP code 06870	5.0 mi	Old Greenwich, 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 06831, plotted from its record coordinates.

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

Scope ZIP code 06831. 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.