Camptonville (formerly, Comptonville and Gold Ridge) is a little town and census-designated place (CDP) located in northeastern Yuba County, California. The town is located 36 miles (58 km) northeast of Marysville, off Highway 49 surrounded by Downieville and Nevada City. It is located upon a ridge amid the North Fork and Middle Fork of the Yuba River, not far away from New Bullards Bar Dam Reservoir. Camptonville lies at an elevation of 2825 feet (861 m). The population was 158 at the 2010 census.

Gold was discovered here in 1850, and the place became known as Gold Ridge. The publicize was untouched to Camptonville in 1854 similar to the first state office opened. The state honors Robert Campton, the town blacksmith.

It was a significant community in the California Gold Rush mature and a stopping lessening for travelers and freight haulers along Henness Pass Road, a major route beyond the Sierra Nevada via Henness Pass in the 1850s and 1860s. A plaque in Camptonville says the roaring town had higher than fifty saloons had brothels and even a bowling alley at one time. However, by 1863 William H. Brewer passed through Camptonville and described it in his journal as follows:

As gold mining in the Place waned, the local economy depended on the timber industry. When Sierra Mountain Mills closed in 1994 putting 75 people out of work, many people moved away. Today the town includes the Lost Nugget gas station and openness store, a publish office, Camptonville Elementary School; a monument to the Pelton wheel, the inventor of which lived here in the 1860s; and the indigenous Mayo Saloon, currently house to a restaurant and bar called Burgee Dave’s at the Mayo; and the Yuba River Ranger District Office of the Tahoe National Forest, which is afterward the headquarters of the Tahoe Hotshots blaze crew.