Denver, Reno, Boise, BUTTE, Los Angeles, Walla Walla, and Walla Walla Wash are all cities located in the western United States. DENVER is a 6-letter city located in Colorado, Reno is a 4-letter city located in Nevada, Boise is a 5-letter city located in Idaho, BUTTE is a 5-letter city located in Montana, Los Angeles is a 10-letter city located in California, Walla Walla is a 10-letter city located in Washington, and Walla Walla Wash is a 14-letter city located in Washington.