ZIP Code 06438 – Haddam, CT
Haddam, Connecticut · Lower Connecticut River Valley Planning Region · Eastern time
| ZIP code | 06438 |
|---|---|
| City | Haddam |
| State | Connecticut |
| County | Lower Connecticut River Valley Planning Region |
| Population | 2,887 |
| Time zone | Eastern · local time |
| ZIP type | Standard (has a Census ZCTA area) |
| Land area | 13.95 sq mi |
| Center (lat, long) | 41.4508, -72.5099 |
Area codes in this area
These are the area codes that most often serve ZIP 06438 (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.
Map
Nearby ZIP codes
About ZIP 06438
ZIP code 06438 is assigned to Haddam, Connecticut. It lies in Lower Connecticut River Valley Planning Region. Its Census area covers about 13.95 square miles of land. The closest neighboring ZIP is 06412 (Chester), about 2.9 miles away.
Every address in 06438 also has a 4-digit add-on code (ZIP+4) that points to a smaller delivery area. Use the box above to find it.
Sources: US Census Bureau (ZCTA, county relationship files), GeoNames (CC BY 4.0), NANPA via NumberResearch.org (CC BY 4.0). Map © OpenStreetMap contributors. ZIP areas are approximate. Population: U.S. Census Bureau, ACS 5-year estimates, 2024 (ZCTA). Data sources