​The Far Western Region of Iota Phi Lambda Sorority, Inc. consists of thirteen states (Alaska, Arizona, California, Colorado, Hawaii, Idaho, Montana, Nevada, New Mexico, Oregon, Utah, Washington and Wyoming), which constitute the Sorority's largest geographic region.  There are currently chapters in five far western states (Arizona, California, Colorado, Nevada and Washington).   The Far West mostly comprises arid to semi-arid plateaus and plains and forested mountains, deserts as well as coastal areas. It is the largest geographic region of the United States.