Sully county is located close to the center of South Dakota. Sully county has 1,006.82 square miles of land area and 63.47 square miles of water area. As of 2010-2014, the total Sully county population is 1,461, which has shrunk 6.11% 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%. Sully county median household income is $61,806 in 2010-2014 and has grown by 90.17% 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%. Sully county median house value is $99,400 in 2010-2014 and has grown by 78.78% 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 Sully county is much better than the state average in quality. The Sully county area code is 605.
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