St. Clair is a city located in Minnesota. With a 2020 population of 829, it is the 381st largest city in Minnesota and the 11128th largest city in the United States. St. Clair is currently declining at a rate of -0.12% annually and its population has decreased by -4.49% since the most recent census, which recorded a population of 868 in 2010. St. Clair reached it's highest population of 865 in 2010. Spanning over 1 miles, St. Clair has a population density of 1,245 people per square mile.
The average household income in St. Clair is $78,911 with a poverty rate of 14.08%. The median rental costs in recent years comes to $638 per month, and the median house value is $144,600. The median age in St. Clair is 30.2 years, 31.2 years for males, and 29 years for females. For every 100 females there are 81.4 males.