Toulon is a city located in Stark County Illinois. It is also the county seat of Stark County. With a 2020 population of 1,129, it is the 620th largest city in Illinois and the 9837th largest city in the United States . Toulon is currently declining at a rate of -1.40% annually and its population has decreased by -12.62% since the most recent census, which recorded a population of 1,292 in 2010. Toulon reached it's highest population of in . Spanning over 1 miles, Toulon has a population density of 1,111 people per square mile.
The average household income in Toulon is $53,035 with a poverty rate of 21.77%. The median rental costs in recent years comes to $631 per month, and the median house value is $75,400. The median age in Toulon is 47.8 years, 44.2 years for males, and 55.6 years for females.