Old Greenwich zip code
Zip code in Old Greenwich, CT
The location Old Greenwich belongs to Fairfield County, state of Connecticut. Old Greenwich has been assigned with the zip code 06870.
Old Greenwich is the official name of the location so if you want to use the US Postal Service you must use that name.
| Zip code | Type | Population |
|---|---|---|
| 06870 | STANDARD | 7,230 |
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