Rancho Murieta, CA has a population of 5,507 and is the 6,063rd largest city in the United States. The population density is 463 per sq mi which is 99% higher than the California average and 411% higher than the national average. The median age in Rancho Murieta is 51 which is approximately 41% higher than the California average of 36. In Rancho Murieta, 75% of the population over 15 years of age are married, 98% speak English and 1% speak Spanish. 68% of Rancho Murieta residents were born in California, 26% were born out of state, 0% were born outside of the United States and 6% were foreign born.