Belleville, California was a gold mining boomtown in the San Bernardino Mountains of San Bernardino County, California. It grew up rapidly following the discovery of gold by William F. Holcomb in Holcomb Valley early in 1860. Belleville was named after Belle, the first child born in the new town. It was a busy mining town for ten years, it was virtually abandoned before the end of the 19th century. It is now a ghost town.