Belleville, California was a gold mining boomtown in the San Bernardino Mountains of San Bernardino County, California. The settlement grew up rapidly following the discovery of gold by William F. Holcomb in Holcomb Valley early 1860. Which helped the town challenge the seat of San Bernardino County (which subsequently after the election in 1861 went to San Bernardino). 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.