Mountain Ranch, CA has a population of 1,170 and is the 14,181st largest city in the United States. The population density is 28 per sq mi which is 88% lower than the California average and 69% lower than the national average. The median age in Mountain Ranch is 57 which is approximately 58% higher than the California average of 36. In Mountain Ranch, 65% of the population over 15 years of age are married, 96% speak English and 4% speak Spanish. 72% of Mountain Ranch residents were born in California, 24% were born out of state, 1% were born outside of the United States and 3% were foreign born.