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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Oklahoma ZIP Codes

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

State ZIP Code City County Area Codes
OK 74445 Morris Okmulgee County 539, 918
OK 74446 Okay Wagoner County 539, 918
OK 74447 Okmulgee Okmulgee County 539, 918
OK 74450 Oktaha Muskogee County 539, 918
OK 74451 Park Hill Cherokee County 539, 918
OK 74452 Peggs Mayes County 539, 918
OK 74454 Porter Wagoner County 539, 918
OK 74455 Porum Muskogee County 539, 918
OK 74456 Preston Okmulgee County 539, 918
OK 74457 Proctor Cherokee 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.