St. Peters is a city located in Missouri. With a 2020 population of 57,167, it is the 10th largest city in Missouri and the 679th largest city in the United States. St. Peters is currently growing at a rate of 0.03% annually and its population has increased by 8.73% since the most recent census, which recorded a population of 52,575 in 2010. Spanning over 22 miles, St. Peters has a population density of 2,552 people per square mile.
The average household income in St. Peters is $91,392 with a poverty rate of 3.54%. The median rental costs in recent years comes to $979 per month, and the median house value is $174,800. The median age in St. Peters is 39.8 years, 37.9 years for males, and 41.3 years for females. For every 100 females there are 93.4 males.