Preston is located in southeast Idaho. Preston is part of Franklin County. Preston has 6.65 square miles of land area and 0.01 square miles of water area. As of 2010-2014, the total Preston population is 5,172, which has grown 10.47% since 2000. The population growth rate is much lower than the state average rate of 23.61% and is lower than the national average rate of 11.61%. Preston median household income is $49,955 in 2010-2014 and has grown by 41.90% since 2000. The income growth rate is much higher than the state average rate of 25.98% and is much higher than the national average rate of 27.36%. Preston median house value is $142,700 in 2010-2014 and has grown by 55.62% since 2000. The house value growth rate is higher than the state average rate of 50.99% 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 Preston is worse than the state average in quality. The Preston area code is 208.