Armstrong is located in northwest Iowa. Armstrong is between the Emmet, Kossuth county. Armstrong has 0.88 square miles of land area and has no water area. As of 2010-2014, the total Armstrong population is 924, which has shrunk 5.62% 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%. Armstrong median household income is $48,603 in 2010-2014 and has grown by 37.12% since 2000. The income growth rate is higher than the state average rate of 33.56% and is higher than the national average rate of 27.36%. Armstrong median house value is $69,300 in 2010-2014 and has grown by 54.34% since 2000. The house value growth rate is about the same as the state average rate of 53.09% 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 Armstrong is much better than the state average in quality. The Armstrong area code is 712.