Skamania County is a county located in the U.S. state of Washington. Its name derives from the Chinookan word for swift water, a reference to the Columbia River. As of 2000, the population is 9,872. The county seat is at Stevenson, which is also the county's largest city, although the Carson River Valley CDP is more populous.
As of the census of 2000, there were 9,872 people, 3,755 households, and 2,756 families residing in the county. The population density was 6 people per square mile (2/km²). There were 4,576 housing units at an average density of 3 per square mile (1/km²). The racial makeup of the county was 92.11% White, 0.30% Black or African American, 2.20% Native American, 0.54% Asian, 0.17% Pacific Islander, 2.43% from other races, and 2.25% from two or more races. 4.03% of the population were Hispanic or Latino of any race. 17.7% were of German, 12.5% English, 12.1% Irish, 11.2% United States or American and 5.2% Norwegian ancestry according to Census 2000.
There were 3,755 households out of which 34.00% had children under the age of 18 living with them, 60.50% were married couples living together, 8.20% had a female householder with no husband present, and 26.60% were non-families. 21.10% of all households were made up of individuals and 6.60% had someone living alone who was 65 years of age or older. The average household size was 2.61 and the average family size was 3.02.
In the county, the population was spread out with 26.60% under the age of 18, 6.70% from 18 to 24, 28.60% from 25 to 44, 27.10% from 45 to 64, and 11.00% who were 65 years of age or older. The median age was 39 years. For every 100 females there were 101.30 males. For every 100 females age 18 and over, there were 99.40 males.
The median income for a household in the county was $39,317, and the median income for a family was $44,586. Males had a median income of $36,732 versus $25,130 for females. The per capita income for the county was $18,002. About 10.00% of families and 13.10% of the population were below the poverty line, including 18.10% of those under age 18 and 7.90% of those age 65 or over.