First State Bank Address: 250 W Whalen St, Guernsey, WY 82214 Phone: (307) 836-2152 Banks Other Businesses: Air Force at 15 Building, Guernsey, WY 82214 Oregon Trail Bank at 17 N Wyoming Ave, Guernsey, WY 82214 First State Bank at 250 W Whalen, Guernsey, WY 82214 Bunkhouse Motel at 350 W Whalen St, Guernsey, WY 82214