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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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DuPage County ZIP Codes

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

County State ZIP Code City Area Codes
Dupage County IL 60399 Wood Dale 630
DuPage County IL 60502 Aurora 331, 630
DuPage County IL 60504 Aurora 331, 630
DuPage County IL 60514 Clarendon Hills 331, 630
DuPage County IL 60515 Downers Grove 331, 630
DuPage County IL 60516 Downers Grove 331, 630
DuPage County IL 60517 Woodridge 331, 630
DuPage County IL 60519 Eola 331, 630
DuPage County IL 60521 Hinsdale 331, 464, 630, 708
Dupage County IL 60522 Hinsdale 773, 224, 708, 312, 630, 847
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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.