What Is the Size of Yellowstone National Park?

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Yellowstone National Park is one of the most well-known national parks in the United States. In fact, it was the country's first official national park. Today, it is an extremely popular tourist destination, bringing millions of visitors each and every year interested in seeing unmatched wildlife and geological features such as the famous Old Faithful Geyser.

Total Size

Yellowstone has nearly 3,500 square miles of territory. This equals over 2.2 million acres, which is larger than the states of Delaware and Rhode Island combined.

Spanning Three States

The vast majority--96% of Yellowstone--is in Wyoming. A further 3% of the park's territory is in Montana and 1% is in Idaho.


The park is so large that it employs more than 3,500 people in the peak seasons. This includes everyone from park guides to gas station attendants.

Guest Accommodations

There are over 2,200 rooms, lodges and cabin spaces available throughout Yellowstone National Park. Additionally, there are 12 campsites and 2,000 campgrounds.


There are over 300 miles of paved roads within Yellowstone National Park. There are nine different museums and visitor centers and a total of more than 2,000 buildings.