Osceola was an unincorporated community that existed in King County, Washington

King County, Washington

King County is a county located in the U.S. state of Washington. The population in the 2010 census was 1,931,249. King is the most populous county in Washington, and the 14th most populous in the United States....

, around the turn of the 20th century, about two miles southeast of Enumclaw

Enumclaw, Washington

Enumclaw is a city in King County, Washington, United States. The population was 10,669 at the 2010 census.The Enumclaw Plateau, on which the city resides, was formed by a volcanic mudflow from Mount Rainier approximately 5,700 years ago....

. Today not much remains except the last surviving one-room schoolhouse on the Enumclaw plateau; it is now the Osceola Community Club, a women's social club. The ancient Osceola Mudflow from nearby Mount Rainier

Mount Rainier

Mount Rainier is a massive stratovolcano located southeast of Seattle in the state of Washington, United States. It is the most topographically prominent mountain in the contiguous United States and the Cascade Volcanic Arc, with a summit elevation of . Mt. Rainier is considered one of the most...

forms much of the Enumclaw plateau, and was named after the community.