The Ozarks are a mountainous region of the United States.
The Ozarks , also referred to as the Ozark Mountains , Ozarks Mountain Country , and the Ozark Plateau , is a physiographic and geologic highland region of the central United States , primarily in Arkansas , Missouri , and Oklahoma . The Ozark Highlands area , covering nearly 47000 sqmi , is by far the most extensive mountainous region between the Appalachians and the Rocky Mountains . Together , the Ozarks and Ouachita Mountains form an area known as the U.S. Interior Highlands , and are sometimes referred to collectively . The U.S. Interior Highlands is a mountainous highland region spanning eastern Oklahoma , western and northern Arkansas , southern Missouri , and the extreme southeast corner of Kansas .