Clearlake is a city located in California. With a 2020 population of 15,091, it is the 329th largest city in California and the 2306th largest city in the United States. Clearlake is currently declining at a rate of -0.58% annually and its population has decreased by -1.04% since the most recent census, which recorded a population of 15,250 in 2010. Clearlake reached it's highest population of 15,532 in 2017. Spanning over 11 miles, Clearlake has a population density of 1,490 people per square mile.
The average household income in Clearlake is $42,125 with a poverty rate of 32.98%. The median rental costs in recent years comes to $861 per month, and the median house value is $110,500. The median age in Clearlake is 37.5 years, 37.2 years for males, and 37.6 years for females. For every 100 females there are 95.6 males.