What is the size of the southwest region of the US in square miles?

Answer 1

There is no official definition of the Southwest Region of the United States. Different U.S. governmental departments have different designations of the area included in the Southwest Region. The Southwest Region of the United States generally includes all or portions of eight states. The eight states and their total area in square miles are Arizona (113,990 square miles), California (163,694 square miles), Colorado (104,093 square miles), Nevada (110,571 square miles), New Mexico (121,590 square miles), Oklahoma (69,898 square miles), Texas (268,596 square miles) and Utah (84,896 square miles). The eight states have a total area of 1,037,328 square miles.