Guilford is located close to the center of Maine. Guilford is part of Piscataquis County. Guilford has 1.92 square miles of land area and 0.05 square miles of water area. As of 2010-2014, the total Guilford population is 915, which has shrunk 3.17% since 2000. The population growth rate is much lower than the state average rate of 4.21% and is much lower than the national average rate of 11.61%. Guilford median household income is $32,778 in 2010-2014 and has grown by 18.78% since 2000. The income growth rate is much lower than the state average rate of 31.05% and is lower than the national average rate of 27.36%. Guilford median house value is $100,300 in 2010-2014 and has grown by 60.74% since 2000. The house value growth rate is lower than the state average rate of 75.89% 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 Guilford is worse than the state average in quality. The Guilford area code is 207.