Caledonia Zip Code - New YorkThe US ZIP Code basic format consists of five decimal numerical digits assigned to the Caledonia City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Caledonia ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Caledonia, New York.The is 14423.If you want to send a mail to Caledonia City, you should use the 14423 Zip Code.In 1983, the U.S.
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Postal Service introduced an expanded Caledonia ZIP code system that it called ZIP+4, often called 'plus-four codes', 'add-on codes', or 'add ons'. A ZIP+4 code uses the basic 14423 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Caledonia city block, a group of apartments, an individual high-volume receiver of mail or any other unit that could use an extra identifier to aid in efficient mail sorting and delivery in New York.