Marblehead is located in northeast Massachusetts. Marblehead is part of Essex County. Marblehead has 4.39 square miles of land area and 15.20 square miles of water area. As of 2010-2014, the total Marblehead population is 20,163, which has shrunk 1.05% since 2000. The population growth rate is much lower than the state average rate of 4.85% and is much lower than the national average rate of 11.61%. Marblehead median household income is $100,709 in 2010-2014 and has grown by 36.15% since 2000. The income growth rate is higher than the state average rate of 34.34% and is higher than the national average rate of 27.36%. Marblehead median house value is $552,700 in 2010-2014 and has grown by 62.22% since 2000. The house value growth rate is lower than the state average rate of 77.65% and is higher 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 Marblehead is much better than the state average in quality. The Marblehead area codes are 339, 781.