Irwin is a city located in Idaho. With a 2020 population of 249, it is the 162nd largest city in Idaho and the 15976th largest city in the United States. Irwin is currently growing at a rate of 0.40% annually and its population has increased by 13.70% since the most recent census, which recorded a population of 219 in 2010. Spanning over 2 miles, Irwin has a population density of 101 people per square mile.
The average household income in Irwin is $61,159 with a poverty rate of 5.26%. The median rental costs in recent years comes to $1,104 per month, and the median house value is $176,600. The median age in Irwin is 56.3 years, 60 years for males, and 48.9 years for females. For every 100 females there are 110.7 males.