Arco is a city located in Idaho. With a 2020 population of 896, it is the 91st largest city in Idaho and the 10779th largest city in the United States. Arco is currently growing at a rate of 0.79% annually but its population has decreased by -9.95% since the most recent census, which recorded a population of 995 in 2010. Arco reached it's highest population of 990 in 2010. Spanning over 1 miles, Arco has a population density of 839 people per square mile.
The average household income in Arco is $39,584 with a poverty rate of 30.55%. The median rental costs in recent years comes to $558 per month, and the median house value is $64,600. The median age in Arco is 45.1 years, 45.6 years for males, and 43.5 years for females. For every 100 females there are 93.9 males.