[5] As of the 2010 census, there were 58,781 people, 21,719 households, and 14,132 families living in the county.

There were 23,451 housing units at an average density of 18.5 per square mile (7.1/km2).

[11] In terms of ancestry, 23.5% were German, 13.3% were English, 12.7% were Irish, and 6.6% were American.

[14] As of the 2000 census, there were 55,180 people, 19,647 households, and 13,242 families living in the county.

20.1% were of German, 10.7% English, 7.7% United States or American and 7.3% Irish ancestry.

27.10% of all households were made up of individuals, and 12.40% had someone living alone who was 65 years of age or older.

Like the state as a whole, third-party candidates often receive a larger share of the vote than they do nationally.

The county is part of Washington's 5th congressional district, which is represented by Republican Cathy McMorris Rodgers.