Shellsburg is located in east Iowa. Shellsburg is part of Benton County. Shellsburg has 0.77 square miles of land area and has no water area. As of 2010-2014, the total Shellsburg population is 1,013, which has grown 8.00% since 2000. The population growth rate is higher than the state average rate of 5.19% and is lower than the national average rate of 11.61%. Shellsburg median household income is $46,667 in 2010-2014 and has grown by 11.35% since 2000. The income growth rate is much lower than the state average rate of 33.56% and is much lower than the national average rate of 27.36%. Shellsburg median house value is $135,900 in 2010-2014 and has grown by 48.36% since 2000. The house value growth rate is lower than the state average rate of 53.09% and is about the same as 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 Shellsburg is much better than the state average in quality. The Shellsburg area code is 319.