Dewey county is located close to the center of South Dakota. Dewey county has 2,302.49 square miles of land area and 142.79 square miles of water area. As of 2010-2014, the total Dewey county population is 5,510, which has shrunk 7.74% 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%. Dewey county median household income is $33,704 in 2010-2014 and has grown by 44.83% 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%. Dewey county median house value is $56,400 in 2010-2014 and has grown by 56.67% since 2000. The house value growth rate is lower than the state average rate of 70.48% 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 Dewey county is much better than the state average in quality. The Dewey county area code is 605.
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