U.S. postal lookup

U.S. ZIP Codes Database 2026

Search by ZIP code, city, county, or state and find clear postal details with maps, time zones, and area code data.

42,735 verified records

All states and U.S. territories

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State directory

Michigan ZIP Codes

Complete postal directory, details, and geographic map for the State of Michigan.

State	ZIP Code	City	County	Area Codes
MI	48634	Linwood	Bay County	`989`
MI	48635	Lupton	Ogemaw County	`989`
MI	48636	Luzerne	Oscoda County	`989`
MI	48637	Merrill	Saginaw County	`989`
MI	48638	Saginaw	Saginaw County	`989`
MI	48640	Midland	Midland County	`989`
MI	48641	Midland	Midland County	`989`
MI	48642	Midland	Midland County	`989`
MI	48647	Mio	Oscoda County	`989`
MI	48649	Oakley	Saginaw County	`989`

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About U.S. ZIP Codes

ZIP codes are a United States Postal Service system introduced in 1963 to make mail routing more accurate and efficient. The standard format uses five digits, while ZIP+4 adds four more digits for a more precise delivery segment.

ZIP codes cover the United States, its territories, military mail routes, and other USPS delivery points. This directory organizes that data for practical lookup by ZIP code, city, county, and state.