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.

42,735 verified records
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State directory

Oklahoma ZIP Codes

Complete postal directory, details, and geographic map for the State of Oklahoma.

State ZIP Code City County Area Codes
OK 74022 Copan Washington County 539, 620, 918
OK 74023 Cushing Payne County 539, 580, 918
OK 74026 Davenport Lincoln County 405, 539, 572, 918
OK 74027 Delaware Nowata County 539, 918
OK 74028 Depew Creek County 405, 539, 572, 918
OK 74029 Dewey Washington County 539, 918
OK 74030 Drumright Creek County 539, 918
OK 74031 Foyil Rogers County 918
OK 74032 Glencoe Payne County 405, 539, 572, 580, 918
OK 74033 Glenpool Tulsa County 539, 918
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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.