Which State Is Home to Crater Lake National Park?

Quiz challenge

Crater Lake National Park is in which state?

A Washington B California C Oregon D Idaho

Select an answer to continue.

Crater Lake National Park stands out as one of the most awe-inspiring natural landmarks in North America, famous for its intense deep blue water, dramatic surrounding cliff walls, and fascinating volcanic geology. Formed roughly 7,700 years ago following the catastrophic collapse of a giant stratovolcano, the massive caldera filled over centuries purely with rainwater and melted snow, resulting in the deepest lake in the United States. Beyond its remarkable geological history, this celebrated national park draws hundreds of thousands of visitors each year to experience scenic drives, mountain trails, and pristine forest landscapes. But do you know which state claims this incredible national treasure?

The correct answer

C) Oregon

Crater Lake National Park is located in Oregon.

Oregon is the proud home of Crater Lake National Park, which was officially established in 1902 as the fifth national park in the United States. Located in southern Oregon along the crest of the Cascade Mountain Range, Crater Lake is also the state's only national park. The park covers more than 183,000 acres, protecting not only the famous volcanic lake itself but also expansive evergreen forests, mountain peaks, and unique geological features like Wizard Island and the Pinnacles. Its remote location in Klamath County offers spectacular scenic views and pristine natural wilderness that remain largely preserved.

Why each choice fits—or doesn’t

A) Washington

Why it is not the answer: Washington is home to three beautiful national parks, including Mount Rainier National Park, Olympic National Park, and North Cascades National Park, but Crater Lake is located farther south in the Pacific Northwest region.

B) California

Why it is not the answer: California borders Oregon to the south and features world-famous parks such as Yosemite National Park, Death Valley National Park, and Lassen Volcanic National Park, but Crater Lake sits across the state border to the north.

C) Oregon

Correct choice: Oregon is the correct answer, as Crater Lake National Park is situated entirely within southern Oregon in the Cascade Range and stands as Oregon's sole national park.

D) Idaho

Why it is not the answer: Idaho boasts rugged mountain ranges, deep canyons, and Craters of the Moon National Monument and Preserve, but it does not contain Crater Lake National Park or any official national park within its borders.

More context

The creation of Crater Lake is one of the most dramatic geological events in recent North American history. Around 7,700 years ago, a massive volcano known as Mount Mazama erupted with incredible force, shooting ash across thousands of square miles. As the underground magma chamber emptied, the mountain's peak collapsed inward, leaving behind a massive caldera over three thousand feet deep. Lacking any inlet or outlet streams, the newly formed basin slowly filled with accumulation from heavy regional precipitation and snowfall. Because no river sediment enters the basin, Crater Lake is celebrated as one of the clearest and purest bodies of water on the planet. Indigenous ancestors of the modern Klamath Tribes witnessed the eruption of Mount Mazama, preserving the memory of the event through oral legends passed down across generations. In 1902, President Theodore Roosevelt signed the legislation creating Crater Lake National Park, ensuring that its majestic vistas and delicate alpine ecosystem would remain permanently protected.

Quick facts

At a depth of 1,949 feet, Crater Lake is the deepest lake in the United States and ranks as the ninth-deepest lake in the world.
Crater Lake National Park was established on May 22, 1902, making it the fifth-oldest national park in the United States.
Because the lake has no rivers or streams running into it, its water comes entirely from rain and melting snow, creating exceptional clarity.
Wizard Island is a volcanic cinder cone that emerged inside the caldera after the collapse of Mount Mazama, rising 763 feet above the water level.

Sources

Basic Information – Crater Lake National Park — National Park Service Crater Lake National Park is located in Oregon and was established in 1902.
Crater Lake National Park — U.S. Geological Survey Crater Lake was formed by the collapse of Mount Mazama approximately 7,700 years ago and is Oregon's only national park.
Crater Lake National Park | Travel Oregon — Travel Oregon Crater Lake is the deepest lake in the United States at 1,949 feet deep and is located in Southern Oregon.