State Line is a city located in Mississippi. With a 2020 population of 543, it is the 198th largest city in Mississippi and the 12962nd largest city in the United States. State Line is currently declining at a rate of -0.91% annually and its population has decreased by -3.89% since the most recent census, which recorded a population of 565 in 2010. State Line reached it's highest population of 565 in 2010. Spanning over 4 miles, State Line has a population density of 127 people per square mile.
The average household income in State Line is $42,416 with a poverty rate of 39.33%. The median rental costs in recent years comes to $402 per month, and the median house value is $59,800. The median age in State Line is 30.2 years, 24.9 years for males, and 36.1 years for females. For every 100 females there are 81.1 males.