Complete ZIP Code Details
| ZIP Code | 6437 |
| City | Guilford |
| State | Connecticut (CT) |
| County | South Central Connecticut |
| Timezone | America/New_York |
| Coordinates | 41.3344400, -72.7005100 |
| Population | 22,067 |
| ZIP Type | STANDARD |
| Country | United States |
| ZIP Code | 6437 |
| City | Guilford |
| State | Connecticut (CT) |
| County | South Central Connecticut |
| Timezone | America/New_York |
| Coordinates | 41.3344400, -72.7005100 |
| Population | 22,067 |
| ZIP Type | STANDARD |
| Country | United States |