Modoc County is a county located in California's far northeast corner, bounded by Oregon to the north and Nevada to the east. As of 2000, its population was 9,449. Its population in 2002 was estimated at 9,289. The county seat is Alturas, the county's only incorporated city. According to the U.S. Census Bureau, the county has a total area of 10,887 km² (4,203 mi²). 10,215 km² (3,944 mi²) of it is land and 672 km² (259 mi²) of it is water. The total area is 6.17% water.As of the census2 of 2000, there were 9,449 people, 3,784 households, and 2,550 families residing in the county. The population density was 1/km² (2/mi²). There were 4,807 housing units at an average density of 0/km² (1/mi²). The racial makeup of the county was 85.94% White, 0.69% Black or African American, 4.21% American Indian, 0.61% Asian, 0.07% Pacific Islander, 5.69% from other races, and 2.78% from two or more races. 11.51% of the population were Hispanic or Latino of any race.