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People using cell phones during an eruption of Old Faithful
Cellular service is limited in Yellowstone: during summer the number of users can overwhelm cellular circuits resulting in an inability to send or receive calls, text, or use cellular data.

NPS / Neal Herbert


Cellular & WiFi

Cellular Service

Cellular service is limited in Yellowstone. Cell towers at Mammoth Hot Springs, West Yellowstone, Old Faithful, Grant Village, Lake Village, and Mount Washburn provide service to most developed areas and to the North and West entrances. Check with your provider to verify coverage. During summer the number of users can overwhelm cellular circuits resulting in an inability to send or receive calls, text, or use cellular data. Texting is usually the most effective means of communication in the park. Cellular service is available in most nearby communities and along some of the major highways leading to the park. However, areas without coverage exist throughout the region.


Free WiFi is available at the Albright Visitor Center in Mammoth Hot Springs. Wireless internet access can be purchased at the Mammoth Hotel Lounge, the Old Faithful Snow Lodge, Lake Lodge Cafeteria, and Grant Village Lodge buildings. Connectivity is limited and may not be available at all times.


Powell Lock provides locksmith services in Yellowstone.


Everyone needs to sleep and Yellowstone provides lots of options with 9 lodges and 12 campgrounds. There are even more choices in the vibrant communities outside the park.

Medical Services

In case of an emergency, dial 911.

Medical services are available year-round (except some holidays) at the Mammoth Clinic (307-344-7965). During summer, medical services are offered at Lake Clinic (307-242-7241) and at Old Faithful Clinic (307-545-7325): check the operating hours & seasons page for details. All clinics are open to the public and are equipped for most medical emergencies as well as for routine care. Services include injury and illness treatment, x-rays, as well as some lab and pharmacy services. If in-patient care or advanced services are required, clinic staff can stabilize patients and arrange for transfer to hospitals outside the park.

Post Offices

U.S. Post Offices are located at Canyon Village, Grant Village, Lake Village, Mammoth Hot Springs, and Old Faithful. View our operating hours & seasons page for more information.

RV Repair

The following businesses are authorized to provide RV repair in Yellowstone:

Mobile RV Tech: (406) 682-4100
Motorcoach Maintenance & Truck Repair, Inc: (406) 388-7448

Satellite Phones

Satellite phones are a fairly reliable means of communication in Yellowstone: expect dropped calls and periodic lack of service when satellites are not in a position to transmit.

Service Stations

Service stations can be found at Canyon Village, Fishing Bridge, Grant Village, Mammoth Hot Springs, Old Faithful, and Tower Junction. All service stations offer 24-hour, year-round credit card fueling. Call 406-848-7548 for assistance and view our operating hours & seasons page for more information.


You'll be able to buy gifts, food, and more at the stores and gift shops located throughout the park.


Last updated: December 18, 2018

Contact the Park

Mailing Address:

PO Box 168
Yellowstone National Park, WY 82190-0168



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