Guilford, CT ZIP code
The ZIP code for Guilford, Connecticut is 06437. It is in New Haven County.
- Population in these ZIPs
- 22,067
- Avg. median income
- $137,600population-weighted
- Typical home value
- $635,500population-weighted
- Metro area
- New Haven, CT
Loading map…
Click anywhere on the map to see which ZIP code it's in.
Guilford, CT ZIP code list
| ZIP code | Population | Median income | Typical home value |
|---|---|---|---|
| 06437 | 22,067 | $137,615 | $635,500 |
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 Guilford
- Madison 4 mi
- North Branford 4 mi
- Northford 6 mi
- Branford 6 mi
- Killingworth 7 mi
- North Haven 9 mi
- Clinton 9 mi
- Durham 9 mi
- Wallingford 11 mi
- Higganum 11 mi
- Westbrook 12 mi
- Deep River 12 mi
Frequently asked questions
What is the ZIP code for Guilford, CT?
The ZIP code for Guilford, CT is 06437.
What county is Guilford, Connecticut in?
Guilford ZIP codes are in New Haven County.