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
All states and U.S. territories
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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 74836 Connerville Johnston County 580
OK 74837 Cromwell Seminole County 405, 572
OK 74839 Dustin Hughes County 405, 539, 572, 918
OK 74840 Earlsboro Pottawatomie County 405, 572
OK 74842 Fittstown Pontotoc County 580
OK 74843 Fitzhugh Pontotoc County 580
OK 74844 Francis Pontotoc County 580
OK 74845 Hanna McIntosh County 405, 539, 572, 918
OK 74848 Holdenville Hughes County 405, 539, 572, 580, 918
OK 74849 Konawa Seminole County 405, 572, 580
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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.