Capital: Oklahoma City.
Area: 69,898 sq mi (181,038 sq km).
Population: ~ 3,965,000.
Largest cities: Oklahoma City, Tulsa, Norman, Broken Arrow, Lawton, Edmond, Moore, Midwest City, Enid, Stillwater, Muskogee, Ponca City, Yukon, Duncan, Bartlesville, Owasso, Shawnee, Ardmore, Bixby, Del City, Sapulpa, Altus, Bethany, El Reno, Ada, Durant, Sand Springs, Mustang, Claremore, Jenks, McAlester, Chickasha, Tahlequah.
Oklahoma is a state in the United States' South Central region, bordered by Texas to the south and west, Kansas to the north, Missouri to the northeast, Arkansas to the east, New Mexico to the west, and Colorado to the northwest. It is the 20th largest and the 28th most populous of the 50 United States. The name of the state is derived from the Choctaw words okla and humma, meaning "red people." Oklahoma is the 20th-largest state in the United States, covering an area of 69,899 square miles (181,040 km2), with 68,595 square miles (177,660 km2) of land and 1,304 square miles (3,380 km2) of water. Oklahoma is the 28th largest state by population and the 20th largest in area.
Popular tourist attractions: the Illinois River, the Narrow Volcano, the Ouachita Mountains covering much of southeastern Oklahoma, the Will Rogers Memorial Museum, the Oklahoma Science Museum...
Image source: @geology.com