Round Mountain is a census-designated place in Shasta County, California, United States.

[2] According to the United States Census Bureau, the CDP has a total area of 1.7 square miles (4.4 km2), 99.60% of it land and 0.40% of it water.

Round Mountain is the geographic center of the Achomawi and Atsugewi or "Pit River" first nation.

Round Mountain is the home of Hill Country Health and Wellness Center, one of the most solvent clinics in California.

Some organic farmers in Round Mountain are members of the Shasta Regional Seed Cooperative and work together to maintain hundreds of heirloom food crops as well as bio-dynamic farming techniques.

Some of these forward-thinking residents also maintain local crime-watch activities and network projects to advance the sustainability of the region.

A second substation was planned, then canceled, in 2009, along with 650 miles (1,050 km) of electrical lines from central California thru Round Mountain and then northbound.

This plan, called TANC (Transmission Authority of Northern California), was halted by citizens who produced presentations statewide, showing that Department of Energy data conflicted with the project's stated goals.

The location of a major road reconstruction project in 2009 of "the fountain" (a set of curves leading into Round Mountain from the west) became the scene of major shifting, road buckling, and surface water eruptions in the first rain season after completion.

Local geography invites fishing, mountain climbing, and hiking as well as opportunities to experience some of California's wildest land.

[6] Federally, Round Mountain is in California's 1st congressional district, represented by Republican Doug LaMalfa.

The Fountain Fire burned 64,000 acres (260 km2), destroying approximately 600 structures in Round Mountain and the nearby communities of Moose Camp and Montgomery Creek.