Martelle is located in east Iowa. Martelle is between the Jones, Linn county. Martelle has 0.34 square miles of land area and has no water area. As of 2010-2014, the total Martelle population is 242, which has shrunk 13.57% since 2000. The population growth rate is much lower than the state average rate of 5.19% and is much lower than the national average rate of 11.61%. Martelle median household income is $41,250 in 2010-2014 and has has shrunk by 13.16% 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%. Martelle median house value is $106,700 in 2010-2014 and has shrunk by -81.15% since 2000. The house value growth rate is much higher than the state average rate of 53.09% 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 Martelle is much better than the state average in quality. The Martelle area code is 319.