Gold Mountain, CA has a population of 21 and is the 28,764th largest city in the United States. The population density is 3 per sq mi which is 99% lower than the California average and 96% lower than the national average. The median age in Gold Mountain is 0 which is approximately 100% lower than the California average of 36. In Gold Mountain, 100% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 0% of Gold Mountain residents were born in California, 100% were born out of state, 0% were born outside of the United States and 0% were foreign born.