Clearlake is located in northwest California. Clearlake is part of Lake County. Clearlake has 10.13 square miles of land area and 0.45 square miles of water area. As of 2010-2014, the total Clearlake population is 15,121, which has grown 15.06% since 2000. The population growth rate is higher than the state average rate of 12.39% and is higher than the national average rate of 11.61%. Clearlake median household income is $25,532 in 2010-2014 and has grown by 28.54% since 2000. The income growth rate is about the same as the state average rate of 29.47% and is about the same as the national average rate of 27.36%. Clearlake median house value is $88,500 in 2010-2014 and has grown by 8.19% since 2000. The house value growth rate is much lower than the state average rate of 75.60% and is much lower than the national average rate of 46.91%. As a reference, the national Consumer Price Index (CPI) inflation rate for the same period is 26.63%. On average, the public school district that covers Clearlake is worse than the state average in quality. The Clearlake area code is 707.