| Business | Phone |
| Guernsey State Park Guernsey St Park, Guernsey 82214 | (307) 836-2942 |
| Guernsey State Park Highway 317, Guernsey 82214 | (307) 836-2334 |
| Museum Guernsey State Park Lake Shore Dr, Guernsey 82214 | (307) 836-2900 |
| National Park Svc Whalen Dam, Guernsey 82214 | (307) 836-2811 |