Lake Wildwood, CA has a population of 5,289 and is the 6,212th largest city in the United States. The population density is 1,730 per sq mi which is 644% higher than the California average and 1809% higher than the national average. The median age in Lake Wildwood is 59 which is approximately 64% higher than the California average of 36. In Lake Wildwood, 72% of the population over 15 years of age are married, 91% speak English and 1% speak Spanish. 54% of Lake Wildwood residents were born in California, 37% were born out of state, 1% were born outside of the United States and 8% were foreign born.