First National Bank-Fairfield Address: 390 Post Ave, Vaughn, MT 59487 Phone: (406) 965-3074 Banks Other Businesses: VALLEY COUNTRY STORE at 133 US HIGHWAY 89, VAUGHN, MT 59487 Silver Spur at 115 Us Highway 89, Vaughn, MT 59487 Office Bar at 128 US Highway 89, Vaughn, MT 59487 Bighorn Bar & Grill at 372 Vaughn North Frontage Rd, Vaughn, MT 59487