Nortonville is an unincorporated ghost town in Contra Costa County, California.

It was located on Kirker Creek 5.5 miles (9 km) north-northeast of Mount Diablo,[2] at an elevation of 801 feet (244 m).

The town site is now part of the Black Diamond Mines Regional Preserve.

[3] He, along with three partners named Cutler, Matheson and Sturgis, started the Black Diamond coal mine at Nortonville in 1860.

The brick foundation of the mine's hoisting works, remnants of the railroad bed, and an old cemetery[3] are all that remain.