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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.

Slope County ZIP Codes - North Dakota

Browse Slope ZIP Codes

ZIP Codes in Slope 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 Slope ZIP Codes, you can easily identify the correct code for mailing, business, or geographic purposes.

Marmarth

Post Office	Marmarth
County	Slope
ZIP Code	58643

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Amidon

Post Office	Amidon
County	Slope
ZIP Code	58620

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