St. Anthony is a city located in Idaho. With a 2020 population of 3,681, it is the 40th largest city in Idaho and the 5636th largest city in the United States. St. Anthony is currently growing at a rate of 1.52% annually and its population has increased by 3.92% since the most recent census, which recorded a population of 3,542 in 2010. Spanning over 2 miles, St. Anthony has a population density of 2,380 people per square mile.
The average household income in St. Anthony is $53,637 with a poverty rate of 12.65%. The median rental costs in recent years comes to $687 per month, and the median house value is $119,900. The median age in St. Anthony is 33.2 years, 35.3 years for males, and 30.2 years for females. For every 100 females there are 128.6 males.