Zip Code 06437 — Guilford, CT
06437 is a ZIP Code associated with Guilford, CT, located within South Central Connecticut. 06437 ranks #12 out of 24 ZIP codes in South Central Connecticut County by population (and #56 out of 288 in CT). The area supports an estimated population of 22,067 residents across Data Pending housing units, with a population density of 180.8 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (41.334440, -72.700510)
| Data Metric | Local Statistic |
|---|
| Postal / Zip Code | 06437 |
| Primary City | Guilford |
| State / Province | CT |
| County | South Central Connecticut |
| Total Population | 22,067 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 180.8 people/sq mi |
| Timezone | America/New_York |
How 06437 Compares
| Metric | ZIP 06437 | South Central Connecticut County | CT State Average |
|---|
| Population | 22,067 | 570,734 (Total) | 3,624,508 (Total) |
| Average ZIP Income | Data Pending | N/A | N/A |
| Population Density | 180.8 /sq mi | -- | -- |
| County Pop Rank | #12 of 24 | -- | -- |
Nearby ZIP Codes
Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →