Emerald Lake Hills, CA has a population of 4,716 and is the 6,722nd largest city in the United States. The population density is 3,947 per sq mi which is 1598% higher than the California average and 4256% higher than the national average. The median age in Emerald Lake Hills is 45 which is approximately 26% higher than the California average of 36. In Emerald Lake Hills, 68% of the population over 15 years of age are married, 83% speak English and 5% speak Spanish. 59% of Emerald Lake Hills residents were born in California, 25% were born out of state, 1% were born outside of the United States and 15% were foreign born.