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7 hours ago · Oklahoma is the 20th-largest state in the United States, covering an area of 69,895 square miles (181,030 km 2 ), with 68,591 square miles (177,650 km 2) of land and 1,304 square miles (3,380 km 2) of water. [60] It lies partly in the Great Plains near the geographical center of the 48 contiguous states.
