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Greenwich CT Zip Codes

06830 - Downtown, Byram, Belle Haven, central Mid-Country

06831 - Glenville, Pemberwick, Back Country,  Banksville, Stanwich, North Greenwich

06870 - Old Greenwich

06878 - Riverside, North Mianus

06807 - Cos Cob, Mianus, eastern Mid-Country

For those of you that are interested, Greenwich is broken up into 4 different neighborhoods (census-designated place) between Greenwich, Cos Cob, Riverside and Old Greenwich and covers 5 different zip codes (two for Greenwich and one for each of the three remaining).


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