West Yellowstone, MT is a city located in Gallatin County, Montana and has a land area of 413.94 square miles (1,072.10 km2). The water area for the city is 20.51 square miles or 53.12 km2. There is one unique zip code in West Yellowstone, Montana and it is 59758. The area code(s) for West Yellowstone is 406.
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