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U.S. ZIP Codes Database 2026

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Montcalm County ZIP Codes

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

County State ZIP Code City Area Codes
Montcalm County MI 48811 Carson City 989
Montcalm County MI 48812 Cedar Lake 989
Montcalm County MI 48818 Crystal 989
Montcalm County MI 48829 Edmore 989
Montcalm County MI 48834 Fenwick 616, 989
Montcalm County MI 48838 Greenville 616, 989
Montcalm County MI 48850 Lakeview 231, 989
Montcalm County MI 48852 Mcbrides 989
Montcalm County MI 48884 Sheridan 616, 989
Montcalm County MI 48885 Sidney 616, 989
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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.