Alameda County is a county in California. It occupies most of the East Bay, a region in the San Francisco Bay Area. As of the 2000 census it had a population of 1,443,741. The county seat is Oakland. According to the U.S. Census Bureau, the county has a total area of 2,127 km² (821 mi²). 1,910 km² (738 mi²) of it is land and 216 km² (84 mi²) of it is water. The total area is 10.18% water. As of the census2 of 2000, there were 1,443,741 people, 523,366 households, and 339,141 families residing in the county. The population density was 756/km² (1,957/mi²). There were 540,183 housing units at an average density of 283/km² (732/mi²). The racial makeup of the county was 48.79% White, 20.45% Asian, 14.93% Black or African American, 8.94% from other races, 5.63% from two or more races, 18.97% Hispanic or Latino of any race, 0.63% Native American, and 0.63% Pacific Islander.