Greenville is a city located in Bond County Illinois. It is also the county seat of Bond County. With a 2020 population of 6,261, it is the 293rd largest city in Illinois and the 4215th largest city in the United States . Greenville is currently declining at a rate of -1.23% annually and its population has decreased by -10.56% since the most recent census, which recorded a population of 7,000 in 2010. Greenville reached it's highest population of 7,070 in 2010. Spanning over 6 miles, Greenville has a population density of 992 people per square mile.
The average household income in Greenville is $56,683 with a poverty rate of 24.35%. The median rental costs in recent years comes to $564 per month, and the median house value is $100,000. The median age in Greenville is 39 years, 35 years for males, and 41.9 years for females.