| Post Office Name | US Post Office |
| Address | 122 Litchfield Rd |
| City | Harwinton |
| State | Connecticut |
| Phone Number | (800) 275-8777 |
| Latitude | 41.7549 |
| Longitude | -73.0582 |
6791 US Post Office in Harwinton, Connecticut is located at 122 Litchfield Rd. The Harwinton Post Office Number is (800) 275-8777
