ZIP Code 06858

06858 is one of Connecticut's ZIP codes, delivering to addresses in Norwalk, Western Connecticut Planning Region.

City

Norwalk

Planning region

Western Connecticut Planning Region

State

Connecticut

Prefix

068xx

Where this code sits

06858 is part of the 068xx range, the group of codes handled by one mail processing centre. Norwalk is served by 10 ZIP codes in total; the full list, with the planning region each falls in, is on the Norwalk page.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 06858 delivers to without sharing its boundary.

ZIP codes nearest 06858

The ZIP codes whose reference points sit closest to 06858.
ZIP code	Distance	Delivers to
ZIP code 06856	0.2 mi	Norwalk, CT
ZIP code 06855	1.0 mi	Norwalk, CT
ZIP code 06854	1.2 mi	Norwalk, CT
ZIP code 06850	1.3 mi	Norwalk, CT
ZIP code 06851	1.6 mi	Norwalk, CT
ZIP code 06853	3.0 mi	Norwalk, CT
ZIP code 06881	3.7 mi	Westport, CT
ZIP code 06880	4.1 mi	Westport, 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 06858, plotted from its record coordinates.

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

Scope ZIP code 06858. 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.