Old Greenwich, CT ZIP Codes

ZIP code, county, time zone and coordinates of Old Greenwich, Connecticut

The ZIP code of Old Greenwich, CT is 06870. Old Greenwich has 2 ZIP codes: 06870, 06878. It is in Western Connecticut Planning Region.

Mailing address format for Old Greenwich

John Smith
123 Main St
OLD GREENWICH CT 06870
USA

USPS prefers capital letters without punctuation. Check the exact ZIP+4 for a street address on the USPS website.

All ZIP codes in Old Greenwich

ZIP codePopulationArea
06870—2.3 sq miMain
06878—2.4 sq mi

ZIP Code Tabulation Areas (ZCTA), U.S. Census Bureau. A ZCTA can cover parts of more than one town.

Where is Old Greenwich? Location, county and time zone

State
Connecticut
County
Western Connecticut Planning Region
GPS coordinates
41.01924, -73.56667
Time zone
America/New YorkEST · UTC-05:00
Population
6,962

Map of Old Greenwich, CT 06870

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ZIP codes near Old Greenwich

Old Greenwich ZIP code: FAQ

What is the ZIP code for Old Greenwich, CT?

The main ZIP code for Old Greenwich, CT is 06870. All ZIP codes: 06870, 06878.

How many ZIP codes does Old Greenwich have?

Old Greenwich has 2 ZIP codes.

What county is Old Greenwich, CT in?

Old Greenwich is in Western Connecticut Planning Region, Connecticut.

What time zone is Old Greenwich in?

Old Greenwich is in the America/New York time zone (EST, UTC-05:00 right now).

What are the coordinates of Old Greenwich?

Latitude 41.01924, longitude -73.56667.

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