Millstadt is a city located in St. Clair County Illinois. Millstadt has a 2020 population of 6,281. Millstadt is currently declining at a rate of -0.82% annually and its population has decreased by -6.59% since the most recent census, which recorded a population of 6,724 in 2010. Millstadt reached it's highest population of 6,724 in 2010.
The average household income in Millstadt is $96,769 with a poverty rate of 5.42%. The median rental costs in recent years comes to $825 per month, and the median house value is $207,000. The median age in Millstadt is 45.2 years, 42.2 years for males, and 46.3 years for females.