Crab Orchard is a city in Cumberland County, Tennessee, United States. The population was 838 at the 2000 census. The town is situated atop the Cumberland Plateau in a gap amidst the Crab Orchard Mountains, a sub-range of the Cumberland Mountains. This gap has long been frequented by travelers between East and Middle Tennessee. Today, both Interstate 40 and U.S. Route 70 pass through Crab Orchard. Big Rock Mountain (el. 2,703 ft/824m) rises prominently to the north of Crab Orchard. Haley Mountain (el. 2,660 ft/811m) and Black Mountain (2,827 ft/861m) dominate the view to the south. A section of the Cumberland Trail will, when completed, traverse Crab Orchard from north to south. According to the United States Census Bureau, the city has a total area of 11.1 square miles (29 km2), all land.