As of the census of 2000, there were 339,486 people, 132,084 households, and 83,741 families living in the county. The population density was 54 people per square mile (21/km2). There were 143,908 housing units at an average density of 23 per square mile (9/km2). The racial makeup of the county was 80.4% White, 2.1% Black or African American, 1.8% Native American, 4.3% Asian, 0.5% Pacific Islander, 7.7% from other races, and 3.3% from two or more races. 16.6% of the population were Hispanic or Latino of any race.