State Line is a city located in Idaho. With a 2020 population of 49, it is the 195th largest city in Idaho and the 19107th largest city in the United States. State Line is currently declining at a rate of 0.00% annually and its population has increased by 28.95% since the most recent census, which recorded a population of 38 in 2010. State Line reached it's highest population of 49 in 2018. Spanning over 0 miles, State Line has a population density of 445 people per square mile.
The average household income in State Line is - with a poverty rate of 0.00%. The median rental costs in recent years comes to - per month, and the median house value is -. The median age in State Line is 23.8 years, 0 years for males, and 0 years for females. For every 100 females there are 75.0 males.