ZIP Code 06403

06403 is one of Connecticut's ZIP codes, delivering to addresses in Beacon Falls, Naugatuck Valley Planning Region.

City: Beacon Falls
Planning region: Naugatuck Valley Planning Region
State: Connecticut
Prefix: 064xx

Where this code sits

06403 is part of the 064xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Beacon Falls.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 06403 delivers to without sharing its boundary.

ZIP codes nearest 06403

The ZIP codes whose reference points sit closest to 06403.
ZIP code	Distance	Delivers to
ZIP code 06524	3.1 mi	Bethany, CT
ZIP code 06483	3.7 mi	Seymour, CT
ZIP code 06478	3.8 mi	Oxford, CT
ZIP code 06770	3.8 mi	Naugatuck, CT
ZIP code 06712	6.2 mi	Prospect, CT
ZIP code 06401	6.6 mi	Ansonia, CT
ZIP code 06706	7.0 mi	Waterbury, CT
ZIP code 06762	7.3 mi	Middlebury, 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 06403, plotted from its record coordinates.

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

Scope ZIP code 06403. 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.