Kelseyville is located in northwest California. Kelseyville is part of Lake County. Kelseyville has 2.88 square miles of land area and 0.01 square miles of water area. As of 2010-2014, the total Kelseyville population is 3,516, which has grown 20.08% since 2000. The population growth rate is much higher than the state average rate of 12.39% and is much higher than the national average rate of 11.61%. Kelseyville median household income is $37,606 in 2010-2014 and has grown by 54.36% since 2000. The income growth rate is much higher than the state average rate of 29.47% and is much higher than the national average rate of 27.36%. Kelseyville median house value is $156,800 in 2010-2014 and has grown by 28.31% 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 Kelseyville is worse than the state average in quality. The Kelseyville area code is 707.