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	73530	Davidson	Tillman County	`580, 940`
OK	73531	Devol	Cotton County	`580, 940`
OK	73532	Duke	Jackson County	`580`
OK	73533	Duncan	Stephens County	`580`
OK	73534	Duncan	Stephens County	`580`
OK	73536	Duncan	Stephens County	`580`
OK	73537	Eldorado	Jackson County	`580, 940`
OK	73538	Elgin	Comanche County	`580`
OK	73539	Elmer	Jackson County	`580, 940`
OK	73540	Faxon	Comanche County	`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.