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 49643 Interlochen Grand Traverse County 231
MI 49644 Irons Lake County 231
MI 49645 Kaleva Manistee County 231
MI 49646 Kalkaska Kalkaska County 231, 989
MI 49648 Kewadin Antrim County 231
MI 49649 Kingsley Grand Traverse County 231
MI 49650 Lake Ann Benzie County 231
MI 49651 Lake City Missaukee County 231, 989
MI 49653 Lake Leelanau Leelanau County 231
MI 49654 Leland Leelanau County 231
Page 95 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.