Somersworth is located in southeast New Hampshire. Somersworth is part of Strafford County. Somersworth has 9.79 square miles of land area and 0.20 square miles of water area. As of 2010-2014, the total Somersworth population is 11,765, which has grown 2.51% since 2000. The population growth rate is lower than the state average rate of 6.90% and is much lower than the national average rate of 11.61%. Somersworth median household income is $53,094 in 2010-2014 and has grown by 24.23% since 2000. The income growth rate is lower than the state average rate of 33.39% and is lower than the national average rate of 27.36%. Somersworth median house value is $202,200 in 2010-2014 and has grown by 91.66% since 2000. The house value growth rate is higher than the state average rate of 78.09% and is much 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 Somersworth is much better than the state average in quality. The Somersworth area code is 603.