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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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Effingham County ZIP Codes

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

County State ZIP Code City Area Codes
Effingham County IL 62424 Dieterich 217, 447, 618
Effingham County IL 62426 Edgewood 618
Effingham County IL 62443 Mason 217, 447, 618
Effingham County IL 62461 Shumway 217, 447, 618
Effingham County IL 62467 Teutopolis 217, 447
Effingham County IL 62473 Watson 217, 447, 618
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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.