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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.

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Kalkaska County ZIP Codes

Browse all ZIP Codes, cities, and associated area codes registered in Kalkaska County.

County State ZIP Code City Area Codes
Kalkaska County MI 49633 Fife Lake 231
Kalkaska County MI 49646 Kalkaska 231, 989
Kalkaska County MI 49676 Rapid City 231
Kalkaska County MI 49680 South Boardman 231

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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.