Island Park is a city located in Fremont County Idaho. With a 2020 population of 262, it is the 159th largest city in Idaho and the 15785th largest city in the United States . Island Park is currently declining at a rate of -0.76% annually and its population has decreased by -8.39% since the most recent census, which recorded a population of 286 in 2010. Island Park reached it's highest population of 277 in 2010. Spanning over 6 miles, Island Park has a population density of 43 people per square mile.
The average household income in Island Park is $52,718 with a poverty rate of 29.73%. The median rental costs in recent years comes to - per month, and the median house value is $330,000. The median age in Island Park is 62.9 years, 62.2 years for males, and 64.8 years for females.