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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Page County ZIP Codes

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

County State ZIP Code City Area Codes
DuPage County IL 60521 Hinsdale 331, 464, 630, 708
Dupage County IL 60522 Hinsdale 773, 224, 708, 312, 630, 847
DuPage County IL 60523 Oak Brook 331, 464, 630, 708
DuPage County IL 60527 Willowbrook 331, 464, 630, 708
DuPage County IL 60532 Lisle 331, 630
DuPage County IL 60540 Naperville 331, 630
DuPage County IL 60555 Warrenville 331, 630
DuPage County IL 60559 Westmont 331, 630
DuPage County IL 60561 Darien 331, 630
DuPage County IL 60563 Naperville 331, 630
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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.