St. Peters is a city located in St. Charles County Missouri. With a 2020 population of 60,390, it is the 10th largest city in Missouri and the 634th largest city in the United States . St. Peters is currently growing at a rate of 1.84% annually and its population has increased by 14.86% since the most recent census, which recorded a population of 52,575 in 2010. St. Peters reached it's highest population of 60,390 in 2021. Spanning over 22 miles, St. Peters has a population density of 2,696 people per square mile.
The average household income in St. Peters is $93,577 with a poverty rate of 3.16%. The median rental costs in recent years comes to $990 per month, and the median house value is $182,200. The median age in St. Peters is 39.5 years, 37.5 years for males, and 41.4 years for females.