Clearlake Riviera, CA has a population of 3,204 and is the 8,473rd largest city in the United States. The population density is 614 per sq mi which is 164% higher than the California average and 577% higher than the national average. The median age in Clearlake Riviera is 42 which is approximately 16% higher than the California average of 36. In Clearlake Riviera, 58% of the population over 15 years of age are married, 88% speak English and 12% speak Spanish. 70% of Clearlake Riviera residents were born in California, 21% were born out of state, 1% were born outside of the United States and 9% were foreign born.