Coloma is a small unincorporated former town in El Dorado County, California, USA. It is approximately northwest of Placerville, California. Coloma is most noted for being the site where James W. Marshall first discovered gold in California, at Sutter's Mill on January 24, 1848, leading to the California Gold Rush. Today it is known as a ghost town and the centerpiece of the Marshall Gold Discovery State Historic Park. Coloma was designated a National Historic Landmark District on July 4, 1961
Currently the town counts approximately 300 inhabitants.
The name comes from the original natives' (Nisenan Indians) name for the valley Coloma is in: Cullumah, meaning "beautiful." Coloma is on the South Fork of the American River that runs through the valley.