Connecticut ZIP Codes: Ranges, Prefixes and Major Cities

ZIP codes  |   |  2 min read

Connecticut uses 422 active ZIP codes, running from 06001 to 06927. This guide shows how those codes are grouped, which ones serve the state's largest cities and how to format them correctly.

ZIP code range and prefixes

Every Connecticut ZIP code starts with one of 10 three-digit prefixes. Each prefix points to a sectional center facility, the processing plant that sorts mail for a group of nearby post offices.

  • 060
  • 061
  • 062
  • 063
  • 064
  • 065
  • 066
  • 067
  • 068
  • 069

Types of ZIP codes in Connecticut

TypeCountWhat it covers
Standard271Street delivery areas
PO Box111Post office boxes only
Unique40A single high-volume organization

ZIP codes for major Connecticut cities

CityCountyStandard ZIPsRange
HartfordHartford County806101–06152
StamfordFairfield County706901–06910
WaterburyNew Haven County706701–06710
BridgeportFairfield County606604–06610
New HavenNew Haven County506510–06519
NorwalkFairfield County506850–06855
West HartfordHartford County406107–06119
FairfieldFairfield County306824–06828
HamdenNew Haven County306514–06518
New BritainHartford County306051–06053
DanburyFairfield County206810–06811
East HartfordHartford County206108–06118
GreenwichFairfield County206830–06831
ManchesterHartford County206040–06042
MeridenNew Haven County206450–06451

Hartford is the state capital. Larger cities have many ZIP codes because each code follows mail delivery routes, not city limits.

Sample addresses

Emily Rodriguez 9687 Franklin Dr Meriden, CT 06450
Carlos Lopez 6478 Laurel Dr West Hartford, CT 06110
Elizabeth Brown 7509 Park Dr Hamden, CT 06517

These examples use real city and ZIP pairs with invented street lines, so they are safe for testing and documentation.

Tips for working with these ZIP codes

  • Connecticut ZIP codes start with 0. Store them as text, or spreadsheets and databases will drop the leading zero.
  • All of Connecticut is in the Eastern time zone, which keeps scheduling logic simple.
  • A quick sanity check: a valid CT ZIP code begins with one of the prefixes listed above.
  • City names in addresses are post office names. A suburb may share a ZIP code and city name with a nearby larger town.

Create realistic Connecticut addresses for testing, with real cities, counties and ZIP codes.

Generate Connecticut addresses