Sonoma County is a county located on the Pacific coast of the U.S. state of California, north of the San Francisco Bay Area. As of 2000 it had a population of 458,614. The county seat is Santa Rosa. According to the U.S. Census Bureau, the county has a total area of 4,580 km² (1,768 mi²). 4,082 km² (1,576 mi²) of it is land and 498 km² (192 mi²) of it is water. The total area is 10.88% water. As of the census2 of 2000, there were 458,614 people, 172,403 households, and 112,406 families residing in the county. The population density was 112/km² (291/mi²). There were 183,153 housing units at an average density of 45/km² (116/mi²). The racial makeup of the county was 81.60% White, 1.42% Black or African American, 1.18% Native American, 3.07% Asian, 0.20% Pacific Islander, 8.44% from other races, and 4.09% from two or more races. 17.34% of the population were Hispanic or Latino of any race.