Texas is a state located in the west south-central United States; it is bordered on the north by Oklahoma and Arkansas; on the east by Arkansas and Louisiana; on the southeast by the Gulf of Mexico; on the southwest by
the Mexican states of Tamaulipas, Nuevo Leon, Coahuila, and Chihuahua; and on the west by New Mexico. Galveston, Matagorda, and Padre are the islands of the Gulf of Mexico that belong to the state of Texas.
The major physiographic divisions of the state are the Gulf Coastal Plain in the east and southeast; the North Central Plains, covering most of central Texas; the Great Plains, extending from west-central Texas up into the panhandle; and the mountainous trans-Pecos area in the extreme west. The geographic center of the state is in McCulloch County, fifteen miles northeast of Brady.