Which U.S. States Are Home to the Cascade Mountains?

The Cascade Range stretches ~700 miles (1,100 km) from British Columbia, Canada to Northern California. Within the U.S., it spans:

1. Washington — Contains the majority of the range, including the highest peaks: Rainier (14,411 ft), Adams, Baker, Glacier Peak, St. Helens.
2. Oregon — Major volcanic peaks: Hood, Jefferson, Three Sisters, Crater Lake (Mazama), McLoughlin.
3. California — Northern terminus: Mount Shasta (14,179 ft), Lassen Peak (southernmost active Cascade volcano).

Minor Extension

A few foothills/volcanic features extend into far northwestern Nevada (e.g., near the Oregon border), but the main range is in the three states above.

Geologic Note

The Cascades are a volcanic arc formed by subduction of the Juan de Fuca Plate under the North American Plate. They're part of the Pacific Ring of Fire.

If You're in the Cascades...

You're in Washington, Oregon, or California (or B.C.). The range forms the "Cascade Divide" — wet, green west slope; dry, sagebrush east slope (rain shadow).