Mammoth is a census-designated place in Park County, Wyoming, United States, in Yellowstone National Park. As of the 2010 census, its population was 263. The 2010 U.S. Census states that the CDP is in "School District Not Defined". Students from Mammoth attend Gardiner Public Schools in Gardiner, Montana. The former Mammoth School has a preschool an…Mammoth is a census-designated place in Park County, Wyoming, United States, in Yellowstone National Park. As of the 2010 census, its population was 263. The 2010 U.S. Census states that the CDP is in "School District Not Defined". Students from Mammoth attend Gardiner Public Schools in Gardiner, Montana. The former Mammoth School has a preschool and a community center.
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