How big is Yellowstone National Park?

Yellowstone National Park covers about 2.2 million acres, roughly 3,470 square miles (about 8,980 km²). That makes it bigger than the states of Rhode Island or Delaware.

square miles: 3,468
km²: 8,983
acres: 2.22 million
football fields: 1.68 million

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<p style="font:13px/1.4 sans-serif;margin:6px 0 0">Map: <a href="https://how-big-is.com/yellowstone-national-park/">How big is Yellowstone National Park?</a> by how-big-is.com. Outline: © OpenStreetMap contributors.</p>

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Three states, one park

Most of the park is in Wyoming, with strips in Montana and Idaho. It was established in 1872 as the first national park in the United States.

Measured from the map

Our outline is the park boundary mapped in OpenStreetMap. Drop it on your own region to see how far it would stretch.

How it compares

12.8×the size of the Little Giant Fire
2.22 millionacres
1.68 millionAmerican football fields
1.26 millionsoccer pitches
2,633×the size of Central Park
18,272×the size of Vatican City
18.2×the size of Lake Tahoe
0.41%of the area of Greenland

Questions people ask

How many acres is Yellowstone?

About 2.2 million acres.

Is Yellowstone bigger than Rhode Island?

Yes, a little more than twice the size of Rhode Island.

Which states is Yellowstone in?

Wyoming, Montana and Idaho. Most of it is in Wyoming.

Where the numbers come from

Official figure: about 2.2 million acres, per the National Park Service. Outline measured at 2.2 million acres (8,899 km²) on the WGS84 ellipsoid. Outline: © OpenStreetMap contributors (source), licence: ODbL 1.0.