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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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Allegan County ZIP Codes

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

County State ZIP Code City Area Codes
Allegan County MI 49348 Wayland 269, 616
Allegan County MI 49406 Douglas 269
Allegan County MI 49408 Fennville 269
Allegan County MI 49416 Glenn 269
Allegan County MI 49419 Hamilton 269, 616
Allegan County MI 49450 Pullman 269
Allegan County MI 49453 Saugatuck 269, 616
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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.