Connecticut ZIP Codes

ZIP codes: 429
Cities & towns: 267
Planning regions: 9
Area codes: 4

How Connecticut ZIP codes are numbered

060xx–069xx

The first three digits identify the sectional center facility that processes mail for a region, so a Connecticut ZIP code can be placed geographically from its prefix alone. Each row names the city holding the most codes in that prefix.

Connecticut three-digit ZIP prefixes, the codes in each, and the city that holds the most of them.
Prefix	ZIP codes	Main area
060xx	76	Manchester
061xx	51	Hartford
062xx	41	Storrs Mansfield
063xx	39	Groton
064xx	64	Wallingford
065xx	33	New Haven
066xx	14	Bridgeport
067xx	50	Waterbury
068xx	44	Norwalk
069xx	17	Stamford

Where Connecticut's communities sit

Each point is a Connecticut community with a published ZIP code list, plotted from its record coordinates. The outline is the convex envelope of those points — a footprint, not a boundary.

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

Connecticut cities by ZIP code count

largest 25

Area codes serving Connecticut

Scope every ZIP code recorded in Connecticut. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. The map outline is a convex envelope of published places, not a state boundary.