Tuolumne County is a county located in the U.S. state of California's Sierra Nevada.According to the U.S. Census Bureau, the county has a total area of 5,891 km² (2,274 mi²). 5,790 km² (2,235 mi²) of it is land and 101 km² (39 mi²) of it is water. The total area is 1.71% water. A California Department of Forestry document reports Tuolumne County's 1,030,812 acres include federal lands such as Yosemite National Park, Stanislaus National Forest, Bureau of Land Management lands, and Indian reservations. As of the census2 of 2000, there were 54,501 people, 21,004 households, and 14,240 families residing in the county. The population density was 9/km² (24/mi²). There were 28,336 housing units at an average density of 5/km² (13/mi²). The racial makeup of the county was 89.45% White, 2.10% Black or African American, 1.82% Native American, 0.72% Asian, 0.17% Pacific Islander, 2.89% from other races, and 2.84% from two or more races. 8.16% of the population were Hispanic or Latino of any race.