State,County
Colorado,Adams
Colorado,Alamosa
Wyoming,Albany
Arizona,Apache
Colorado,Arapahoe
Colorado,Archuleta
Colorado,Baca
Montana,Big Horn
Montana,Blaine
Colorado,Broomfield
Montana,Carbon
Wyoming,Carbon
Montana,Carter
Montana,Chouteau
Arizona,Coconino
Colorado,Conejos
Colorado,Costilla
South Dakota,County-level range not defined
Montana,Custer
Colorado,Delta
Colorado,Douglas
Montana,Fergus
Montana,Garfield
Montana,Golden Valley
Montana,Hill
Montana,Jefferson
Colorado,Kiowa
Colorado,Kit Carson
Colorado,La Plata
Colorado,Larimer
Colorado,Las Animas
Montana,Lewis and Clark
Montana,Liberty
Montana,McCone
Colorado,Moffat
Colorado,Montezuma
Colorado,Montrose
Colorado,Morgan
Montana,Musselshell
Wyoming,Natrona
Arizona,Navajo
Colorado,Otero
Montana,Petroleum
Montana,Phillips
Montana,Powder River
Montana,Prairie
Colorado,Prowers
Colorado,Pueblo
Colorado,Rio Blanco
Montana,Rosebud
Colorado,Saguache
Colorado,San Miguel
Montana,Stillwater
Montana,Sweet Grass
Montana,Toole
Utah,Uintah
Montana,Valley
Colorado,Washington
Colorado,Weld
Montana,Wheatland
Arizona,Yavapai
Montana,Yellowstone