ZIP Code 06857

06857 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

06857 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 06857 delivers to without sharing its boundary.

ZIP codes nearest 06857

The ZIP codes whose reference points sit closest to 06857.
ZIP code	Distance	Delivers to
ZIP code 06875	0.0 mi	Redding Center, CT
ZIP code 06814	0.0 mi	Danbury, CT
ZIP code 06816	0.0 mi	Danbury, CT
ZIP code 06852	0.0 mi	Norwalk, CT
ZIP code 06860	0.0 mi	Norwalk, CT
ZIP code 06888	0.0 mi	Westport, CT
ZIP code 06876	0.8 mi	Redding Ridge, CT
ZIP code 06896	2.9 mi	Redding, 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 06857, plotted from its record coordinates.

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

Scope ZIP code 06857. 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.