Sandwich is located in north Illinois. Sandwich is between the Dekalb, Kendall, La Salle county. Sandwich has 4.69 square miles of land area and 0.02 square miles of water area. As of 2010-2014, the total Sandwich population is 7,513, which has grown 15.42% since 2000. The population growth rate is much higher than the state average rate of 3.62% and is higher than the national average rate of 11.61%. Sandwich median household income is $56,657 in 2010-2014 and has grown by 12.83% since 2000. The income growth rate is much lower than the state average rate of 22.70% and is much lower than the national average rate of 27.36%. Sandwich median house value is $167,200 in 2010-2014 and has grown by 26.38% since 2000. The house value growth rate is lower than the state average rate of 34.33% 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 Sandwich is close to the state average in quality. The Sandwich area code is 815.