Yellowstone is a national park in the United States, mostly in northwestern Wyoming, with smaller sections extending into southern Montana and eastern Idaho.

Quick Scoop: Where Yellowstone Is

  • Country: United States.
  • Region: Northwestern part of Wyoming in the U.S. Rocky Mountains.
  • States:
    • About 96% in Wyoming.
* About 3% in Montana.

* About 1% in Idaho.
  • Nearby: Connected to Grand Teton National Park to the south via the John D. Rockefeller Jr. Memorial Parkway.

Think of Yellowstone as a huge volcanic plateau high in the Rockies, mostly in Wyoming, just brushing into Montana and Idaho.

If You’re Looking It Up or Visiting

  • Map search tip: Type “Yellowstone National Park, Wyoming, USA” in your map app; that will take you to the main area.
  • Main entrances are spread around Wyoming and Montana, giving access from different sides of the park.

TL;DR: Yellowstone National Park is in the northwestern U.S., almost entirely in Wyoming, with small parts in Montana and Idaho.

Information gathered from public forums or data available on the internet and portrayed here.