Rolling Hills Estates, CA has a population of 8,206 and is the 4,608th largest city in the United States. The population density is 2,299 per sq mi which is 889% higher than the California average and 2437% higher than the national average. The median age in Rolling Hills Estates is 50 which is approximately 38% higher than the California average of 36. In Rolling Hills Estates, 75% of the population over 15 years of age are married, 67% speak English and 7% speak Spanish. 48% of Rolling Hills Estates residents were born in California, 25% were born out of state, 2% were born outside of the United States and 26% were foreign born.