Founded in 1890, Cleveland County is one of 77 counties in the state of Oklahoma. Historically, Cleveland County was formed from County 3 in Oklahoma Territory. The city of Norman is the county seat. With FIPS code of 27, Cleveland County has a population of 297,597 and area of 536 square miles (1,388 km2).
List of all cities in Cleveland County, OK alphabetically
|City/Town||Postal Code||Area Code|
|Del City, OK||73165||405|
|Oklahoma City, OK||73153||405|
|University of Ok, OK||73019||405|