<P> Oklahoma is the 20th - largest state in the United States , covering an area of 69,898 square miles ( 181,030 km ) , with 68,667 square miles ( 177,850 km ) of land and 1,281 square miles ( 3,320 km ) of water . It lies partly in the Great Plains near the geographical center of the 48 contiguous states . It is bounded on the east by Arkansas and Missouri , on the north by Kansas , on the northwest by Colorado , on the far west by New Mexico , and on the south and near - west by Texas . Much of its border with Texas lies along the Southern Oklahoma Aulacogen , a failed continental rift . The geologic figure defines the placement of the Red River . </P>
where is oklahoma located in the united states
in the Great Plains near the geographical center of the 48 contiguous states bounded on the east by Arkansas and Missouri , on the north by Kansas , on the northwest by Colorado , on the far west by New Mexico , and on the south and near - west by Texas