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
Maps and coordinates
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 49781 Saint Ignace Mackinac County 906
MI 49782 Beaver Island Charlevoix County 231
MI 49783 Sault Sainte Marie Chippewa County 249, 683, 705, 906
MI 49784 Kincheloe Chippewa County 906
MI 49785 Kincheloe Chippewa County 906
MI 49786 Kincheloe Chippewa County 906
MI 49788 Kincheloe Chippewa County 906
MI 49790 Eckerman Chippewa County 906
MI 49791 Topinabee Cheboygan County 231
MI 49792 Tower Cheboygan County 989
Page 105 of 117

Geographic Map of Michigan

Postal context

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.