East Haddam, CT ZIP code
The ZIP code for East Haddam, Connecticut is 06423. It is in Middlesex County.
- Population in these ZIPs
- 5,182
- Avg. median income
- $107,500population-weighted
- Typical home value
- $468,200population-weighted
- Metro area
- Hartford-West Hartford-East Hartford, CT
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East Haddam, CT ZIP code list
| ZIP code | Population | Median income | Typical home value |
|---|---|---|---|
| 06423 | 5,182 | $107,549 | $468,200 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities near East Haddam
- Hadlyme 3 mi
- Moodus 5 mi
- Chester 6 mi
- Haddam 6 mi
- Colchester 7 mi
- Salem 7 mi
- Essex 7 mi
- Old Lyme 7 mi
- Deep River 8 mi
- Centerbrook 8 mi
- Ivoryton 8 mi
- East Hampton 9 mi
Frequently asked questions
What is the ZIP code for East Haddam, CT?
The ZIP code for East Haddam, CT is 06423.
What county is East Haddam, Connecticut in?
East Haddam ZIP codes are in Middlesex County.