Where is Yellowstone National Park? Check its 3-State Location and Key Facts

America's first national park is the Yellowstone National Park. It is primarily located in Wyoming, extending into Montana and Idaho. This iconic Yellowstone Park is world-famous for its geothermal features, including Old Faithful, and its abundant wildlife. Its unique geography and diverse ecosystems make the national park Yellowstone a global natural wonder, drawing millions to witness its wild beauty and geological marvels. Read on to more know about Yellowstone national park volcano, its 3-state location and wildlife. 

Alisha Louis
Jul 22, 2025, 06:21 EDT

Yellowstone National Park is the world's first national park, which was established in 1872. Its area spans over 2.2 million acres, in other terms, 3,472 square miles (8,991 km²). As the first national park in the United States, and perhaps the world, it set a precedent for conservation and public enjoyment of natural wonders. According to the Yellowstone Forever Organisation, it is primarily located in Wyoming (96%), with portions in Montana (3%) and Idaho (1%). Its wide landscapes, abundant fauna, and stunning geothermal features make it an unrivalled destination. Yellowstone National Park also stands on one of the world's largest and most powerful volcanic systems, the Yellowstone Caldera. Is the Yellowstone National Park Volcano on the verge of erupting? Read below about what makes Yellowstone Park so famous, its supervolcano and its 3-state location.

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Yellowstone National Park

Known for its various ecosystems and notable geothermal features, Yellowstone National Park is a protected region in the western United States. It was established on March 1, 1872, by the United States Congress and signed into law by President Ulysses S. Grant. Yellowstone National Park is an important part of the Greater Yellowstone Ecosystem, which is one of the world's largest and most preserved temperate ecosystems. It is a prominent national park, as it is the first national park to emphasise its tremendous ecological and scientific worth.

Detail

Description

Size

3,472 square miles (2,221,766 acres)

Location

Primarily in Wyoming (96%), with portions extending into Montana (3%) and Idaho (1%).

Elevation

Eagle Peak at 11,358 feet (3,462 m). Lowest point: Reese Creek at 5,282 feet (1,610 m).

Hydrothermal Features

Over 10,000 hydrothermal features, including more than 500 active geysers.

Earthquakes

Experiences 1,000 to 3,000 earthquakes annually.

Wildlife

Home to 67 species of mammals, 285 species of birds, 16 species of fish, 6 species of reptiles, and 5 species of amphibians.

Archeological Sites

More than 1,800 archaeological sites.

Visitation

4,744,353 visitors in the last year (second-highest on record, according to Idaho Capital Sun).

Roads & Trails

466 miles of roads, 15 miles of boardwalk, and 92 trailheads accessing approximately 1,000 miles of trails.

(Source- Yellowstone Forever Organisation and Visit Big Sky Montana)

In what state is Yellowstone National Park?

When asking, "In what state is Yellowstone National Park?", the most accurate answer is that it spans three U.S. states. The vast majority of Yellowstone National Park, approximately 96%, lies within Wyoming. The remaining smaller portions extend into Montana (about 3%) and Idaho (about 1%). This multi-state location contributes to the park's varied terrain, from mountain ranges to forests and geyser basins. So, while Wyoming holds the bulk of the national park, Yellowstone's reach touches two other Western states, making its geographical footprint unique among national parks.

Is Yellowstone's Supervolcano About to Erupt?

Yellowstone National Park Volcano eruption rumors have been cleared by the National Park Service. They further stated that the wildlife in Yellowstone Park are not migrating. Viral videos of animals "fleeing" the park are hoaxes or misinterpretations of normal animal migration. Experts from the Yellowstone Volcano Observatory and the U.S. Geological Survey (USGS) have stated that there are no signs of an eruption approaching currently. Seismic activity, ground movement, and thermal features are constantly being monitored. While Yellowstone is an active volcanic system with a large magma chamber, this magma is mostly solid rock, not ready to erupt. Scientists confirm that current activity levels are normal for the park.

What makes Yellowstone so famous?

Yellowstone National Park is particularly famous for its spectacular geothermal features. It contains more than half of the world's geysers and hydrothermal features, with Old Faithful being its most iconic geyser. Other special features include vibrant hot springs like the Grand Prismatic Spring, bubbling mudpots, and steaming fumaroles. Beyond its geology, Yellowstone Park is a wildlife haven, home to grizzly bears, wolves, bison (the largest wild herd in the U.S.), elk, and various bird species, making wildlife viewing a major draw. The Grand Canyon of the Yellowstone, with its dramatic waterfalls and colourful cliffs, further adds to its scenic beauty, solidifying what makes Yellowstone so famous. 

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Conclusion

Yellowstone National Park is a truly iconic natural treasure, globally recognised for its unique geological features and abundant wildlife. Its expansive 3-state location in Wyoming, Montana, and Idaho contributes to its diverse landscapes. As the world's first national park, Yellowstone Park not only preserves unparalleled natural beauty but also serves as a vital ecosystem and a testament to America's commitment to conservation, ensuring its wonders endure for future generations.

Alisha Louis
Alisha Louis

Content Writer

    Alisha Louis is a US Content Specialist with a Bachelor of Journalism and Mass Communication (BJMC) graduate degree. With a keen eye for detail and a passion for storytelling, she specializes in covering trending news and educational developments across the United States. Her work combines journalistic precision with engaging narratives, making complex topics accessible and relevant for a diverse audience. Dedicated to delivering timely and trustworthy content, Alisha brings a fresh, insightful perspective to every piece she writes.

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