Region I consists of Boundary, Bonner, Kootenai, Benewah, Shoshone, Latah, Clearwater, Lewis, Nez Perce and Idaho Counties.
Region II consists of Adams, Valley, Washington, Boise, Gem, Payette, Canyon, Elmore, Ada and Owyhee Counties.
Region III consists of Camas, Blaine, Butte, Gooding, Lincoln, Minidoka, Jerome, Twin Falls, Cassia, Lemhi, and Custer Counties.
Region IV consists of Clark, Freemont, Jefferson, Madison, Teton, Bonneville, Bingham, Bannock, Caribou, Power, Oneida, Franklin and Bear Lake Counties.