57231 Zip Code
57231 zip code is located in east South Dakota. 57231 zip code is part of Kingsbury County. 57231 zip code has 273.39 square miles of land area and 12.06 square miles of water area. As of 2010-2014, the total 57231 zip code population is 1,749, which has shrunk 5.71% since 2000. The population growth rate is much lower than the state average rate of 10.58% and is much lower than the national average rate of 11.61%. 57231 zip code median household income is $52,067 in 2010-2014 and has grown by 68.80% since 2000. The income growth rate is much higher than the state average rate of 42.67% and is much higher than the national average rate of 27.36%. 57231 zip code median house value is $94,900 in 2010-2014 and has grown by 92.11% since 2000. The house value growth rate is higher than the state average rate of 70.48% 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 57231 zip code is much better than the state average in quality. The 57231 zip code area code is 605.