57440 Zip Code
57440 zip code is located in east South Dakota. 57440 zip code is part of Spink County. 57440 zip code has 142.57 square miles of land area and 0.68 square miles of water area. As of 2010-2014, the total 57440 zip code population is 526, which has shrunk 15.97% 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%. 57440 zip code median household income is $53,438 in 2010-2014 and has grown by 58.33% since 2000. The income growth rate is higher than the state average rate of 42.67% and is much higher than the national average rate of 27.36%. 57440 zip code median house value is $46,700 in 2010-2014 and has grown by 186.50% since 2000. The house value growth rate is much 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 57440 zip code is much better than the state average in quality. The 57440 zip code area code is 605.
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