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What is a ZIP+4 code?

A ZIP+4 code adds four extra digits to a standard ZIP code to help USPS sort and deliver mail more accurately.

Are ZIP codes the same as postal codes?

ZIP codes are the postal code system used in the United States. Other countries use different postal code formats.

Saint John County ZIP Codes

Browse Saint John ZIP Codes

ZIP Codes in Saint John County help organize mail delivery and define local service areas. Each ZIP Code corresponds to a specific community or post office, ensuring residents, businesses, and visitors can find accurate address information quickly. By browsing the complete list of Saint John ZIP Codes, you can easily identify the correct code for mailing, business, or geographic purposes.

St John

Post Office	St John
County	Saint John
ZIP Code	830

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St John

Post Office	St John
County	Saint John
ZIP Code	831

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