Montgomery is a city located in Illinois. With a 2020 population of 19,899, it is the 124th largest city in Illinois and the 1862nd largest city in the United States. Montgomery is currently growing at a rate of 0.38% annually and its population has increased by 7.92% since the most recent census, which recorded a population of 18,438 in 2010. Spanning over 10 miles, Montgomery has a population density of 2,149 people per square mile.
The average household income in Montgomery is $95,697 with a poverty rate of 5.40%. The median rental costs in recent years comes to $1,149 per month, and the median house value is $212,800. The median age in Montgomery is 31.6 years, 30.5 years for males, and 33.2 years for females. For every 100 females there are 95.3 males.