Island Park is a city located in Idaho. With a 2020 population of 275, it is the 158th largest city in Idaho and the 15633rd largest city in the United States. Island Park is currently growing at a rate of 1.48% annually but its population has decreased by -3.85% since the most recent census, which recorded a population of 286 in 2010. Island Park reached it's highest population of 276 in 2010. Spanning over 6 miles, Island Park has a population density of 45 people per square mile.
The average household income in Island Park is $53,553 with a poverty rate of 23.37%. The median rental costs in recent years comes to - per month, and the median house value is $325,000. The median age in Island Park is 60.5 years, 59.8 years for males, and 61.7 years for females. For every 100 females there are 119.0 males.