Mountain range, western U.S. A continuation of the Sierra Nevada, it extends north from Mount Lassen in northeastern California across Oregon and Washington for 700 mi (1,100 km). Its highest elevation is Mount Rainier. Some of the summits, including Mount St. Helens, have erupted in the recent past. The Lewis and Clark Expedition passed through the range in the Columbia River Gorge. Its northern continuation in British Columbia is known as the Coast Mountains. Seealso North Cascades National Park.
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There were 713 households out of which 28.3% had children under the age of 18 living with them, 56.8% were married couples living together, 7.0% had a female householder with no husband present, and 32.8% were non-families. 25.8% of all households were made up of individuals and 6.7% had someone living alone who was 65 years of age or older. The average household size was 2.33 and the average family size was 2.78.
In the CDP the population was spread out with 24.4% under the age of 18, 3.9% from 18 to 24, 27.7% from 25 to 44, 32.5% from 45 to 64, and 11.6% who were 65 years of age or older. The median age was 42 years. For every 100 females there were 107.2 males. For every 100 females age 18 and over, there were 100.3 males.
The median income for a household in the CDP was $48,719, and the median income for a family was $58,393. Males had a median income of $35,034 versus $30,647 for females. The per capita income for the CDP was $25,073. About 1.2% of families and 3.8% of the population were below the poverty line, including none of those under the age of eighteen or sixty-five or over.