Arco is located close to the center of Idaho. Arco is part of Butte County. Arco has 1.06 square miles of land area and 0.01 square miles of water area. As of 2010-2014, the total Arco population is 1,018, which has shrunk 0.78% since 2000. The population growth rate is much lower than the state average rate of 23.61% and is much lower than the national average rate of 11.61%. Arco median household income is $35,000 in 2010-2014 and has grown by 25.03% since 2000. The income growth rate is about the same as the state average rate of 25.98% and is lower than the national average rate of 27.36%. Arco median house value is $87,400 in 2010-2014 and has grown by 70.70% since 2000. The house value growth rate is higher than the state average rate of 50.99% 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 Arco is close to the state average in quality. The Arco area code is 208.