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
Maps and coordinates
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 74034 Hallett Pawnee County 539, 918
OK 74035 Hominy Osage County 539, 918
OK 74036 Inola Rogers County 539, 918
OK 74037 Jenks Tulsa County 539, 918
OK 74038 Jennings Pawnee County 539, 918
OK 74039 Kellyville Creek County 539, 918
OK 74041 Kiefer Creek County 539, 918
OK 74042 Lenapah Nowata County 539, 918
OK 74043 Leonard Tulsa County 918
OK 74044 Mannford Creek County 539, 918
Page 42 of 78

Geographic Map of Oklahoma

Postal context

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.