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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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Muskegon County ZIP Codes

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

County State ZIP Code City Area Codes
Muskegon County MI 49445 Muskegon 231
Muskegon County MI 49451 Ravenna 231, 616
Muskegon County MI 49457 Twin Lake 231
Muskegon County MI 49461 Whitehall 231
Muskegon County MI 49463 Sylvan Beach 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.