ZIP Code 06423 – East Haddam, Connecticut | ZipsCode.us
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ZIP Code 06423
East Haddam, Connecticut · Lower Connecticut River Valley
ZIP code 06423 belongs to the city of East Haddam in Connecticut (Lower Connecticut River Valley). See all Connecticut ZIP Codes.
ZIP code 06423 belongs to East Haddam, Connecticut, in Lower Connecticut River Valley. If you are mailing a letter or package to this area, use East Haddam, CT 06423 in the address. On this page you will find the city and county for 06423, nearby ZIP codes in the same county, and free tools to look up any address in this ZIP code.
What City Is ZIP Code 06423?
The city for ZIP code 06423 is East Haddam, Connecticut. When you write an address in this area, the correct format is: Name, Street Address, East Haddam, CT 06423.
ZIP Code 06423 County and State
ZIP code 06423 is located in Lower Connecticut River Valley, Connecticut. For a complete list of cities and ZIP codes across the state, see the Connecticut ZIP Codes page.
Nearby ZIP Codes in Lower Connecticut River Valley
These ZIP codes are in the same county as 06423:
ZIP Code 06423 on the Map
The map below shows the approximate center of ZIP code 06423, near East Haddam, Connecticut. You can zoom in and drag the map to explore the area.
Map center is approximate (ZIP area center, around 41.4696, -72.4059). Map data © OpenStreetMap.
Population and Demographics of ZIP Code 06423
According to public U.S. Census Bureau data, ZIP code 06423 is home to a community in Connecticut. The figures below come from the U.S. Census and the American Community Survey (ACS).
Source: U.S. Census Bureau, American Community Survey (ACS) 2023 5-year estimates and 2023 Gazetteer. Figures are estimates and change with each new survey.
Find an Address in ZIP Code 06423
Need the full ZIP+4 code for a specific street address in East Haddam? Use the free ZIP+4 Lookup tool, or find any ZIP code from a street address with the ZIP Code by Address tool.
Frequently Asked Questions
What city is ZIP code 06423?
ZIP code 06423 is for East Haddam, Connecticut.
What county is ZIP code 06423 in?
ZIP code 06423 is in Lower Connecticut River Valley, Connecticut.
What state is ZIP code 06423 in?
ZIP code 06423 is in Connecticut (CT).
How do I find the ZIP+4 for an address in 06423?
Use the free ZIP+4 Lookup tool with the full street address to get the complete 9-digit ZIP code.
What are the nearby ZIP codes to 06423?
Nearby ZIP codes include 06371 (Old Lyme), 06376 (South Lyme), 06409 (Centerbrook), 06412 (Chester), 06413 (Clinton).
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