Camptonville (formerly Comptonville and Gold Ridge) is a small town and census-designated place (CDP)[3] located in northeastern Yuba County, California.

The town is located 36 miles (58 km) northeast of Marysville,[4] off Highway 49 between Downieville and Nevada City.

[5] A plaque in Camptonville says the roaring town had over 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: September 10 we started on our way--first to Nevada [City], a few miles, a fine town in a rich mining region, then to San Juan North (there are several other San Juans in the state), then to Camptonville, a miserable, dilapidated town, but very picturesquely located, with immense hydraulic diggings about.

Today the town includes a post office, Camptonville Elementary School; a monument to the Pelton wheel, the inventor of which lived here in the 1860s; and the original Mayo Saloon, currently home to a restaurant and bar, and the Yuba River Ranger District Office of the Tahoe National Forest,[8] which is also the headquarters of the Tahoe Hotshots fire crew.

[9] According to the United States Census Bureau, the CDP covers an area of 0.9 square miles (2.3 km2), all of it land.

There were 81 housing units at an average density of 92.7 per square mile (35.8/km2), of which 39 (55.7%) were owner-occupied, and 31 (44.3%) were occupied by renters.