The largest county in Oklahoma by area, gets its name from the broad rolling hills and rolling tallgrass prairie and Cross Timbers encompassing the county and surrounding areas, including portions of Mayes, Tulsa, Washington and Kay Counties, was created in what year?
Osage County, Oklahoma Osage County is the largest county by area in the state of Oklahoma in the United States. Created in 1907 when Oklahoma was admitted as a state, the county is named for and is home to the federally recognized Osage Nation. The county is coextensive with the Osage Nation Reservation, established by treaty in the 19th century when the Osage relocated there from Kansas. The county seat is in Pawhuska, Oklahoma, one of the first three towns established in the county. The total population of the county is 47,987.
McCurtain County, Oklahoma McCurtain County is located in the southeastern corner of the U.S. state of Oklahoma. As of the 2010 census, the population was 33,151. Its county seat is Idabel. It was formed at statehood from part of the earlier Choctaw Nation in Indian Territory. The name honors an influential Choctaw family that lived in the area. Green McCurtain was the last chief when the Choctaw Nation was dissolved before Oklahoma became a state in 1907.