Knoxville, California
Knoxville is an unincorporated community in Napa County, California. It lies at an elevation of 1322 feet (403 m). Knoxville is located  north-northeast of Saint Helena. The Knoxville post office opened in 1863, moved in 1904 and 1907, and closed permanently in 1912. The name commemorates Ranar B. Knox, owner of a local mine and first post master. References

Unincorporated communities in Napa County, California
Vaca Mountains
Unincorporated communities in California