Rancho Calaveras, CA has a population of 6,661 and is the 5,356th largest city in the United States. The population density is 795 per sq mi which is 211% higher than the California average and 778% higher than the national average. The median age in Rancho Calaveras is 46 which is approximately 27% higher than the California average of 36. In Rancho Calaveras, 57% of the population over 15 years of age are married, 88% speak English and 9% speak Spanish. 74% of Rancho Calaveras residents were born in California, 18% were born out of state, 0% were born outside of the United States and 8% were foreign born.