Aviston is a city located in Clinton County Illinois. With a 2020 population of 2,150, it is the 466th largest city in Illinois and the 7349th largest city in the United States . Aviston is currently growing at a rate of 0.33% annually and its population has increased by 10.54% since the most recent census, which recorded a population of 1,945 in 2010. Aviston reached it's highest population of 2,150 in 2021. Spanning over 2 miles, Aviston has a population density of 1,343 people per square mile.
The average household income in Aviston is $99,696 with a poverty rate of 2.63%. The median rental costs in recent years comes to $829 per month, and the median house value is $165,400. The median age in Aviston is 37.9 years, 35.4 years for males, and 44 years for females.