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.

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Mississippi County ZIP Codes

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

County State ZIP Code City Area Codes
Mississippi County MO 63823 Bertrand 573
Mississippi County MO 63834 Charleston 270, 364, 573, 618
Mississippi County MO 63845 East Prairie 270, 364, 573
Mississippi County MO 63881 Wolf Island 573
Mississippi County MO 63882 Wyatt 573
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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.