57421 Zip Code
57421 zip code is located in northeast South Dakota. 57421 zip code is between the Marshall, Brown county. 57421 zip code has 39.52 square miles of land area and 0.10 square miles of water area. As of 2010-2014, the total 57421 zip code population is 71, which has shrunk 33.02% 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%. 57421 zip code median household income is $28,625 in 2010-2014 and has has shrunk by 2.55% since 2000. The income growth rate is much lower than the state average rate of 42.67% and is much lower than the national average rate of 27.36%. 57421 zip code median house value is $59,700 in 2010-2014 and has shrunk by -165.33% 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 57421 zip code is much better than the state average in quality. The 57421 zip code area code is 605.