St. Clair is a very small city located in the state of Missouri. With a population of 4,716 people and three associated neighborhoods, St. Clair is the 141st largest community in Missouri.St. Clair is a blue-collar town, with 44.54% of people working in blue-collar occupations, while the average in America is just 27.7%. Overall, St. Clair is a city of sales and office workers, production and manufacturing workers, and professionals. There are especially a lot of people living in St. Clair who work in office and administrative support (14.06%), sales jobs (7.78%), and healthcare suport services (5.10%). Also of interest is that St. Clair has more people living here who work in computers and math than 95% of the places in the US. Residents will find that the city is relatively quiet. This is because it is not over-populated, and it has fewer college students, renters, and young children - all of whom can be noisy at times. So, if you're looking for a relatively peaceful place to live, St. Clair is worth considering.The population of St. Clair has a very low overall level of education: only 8.04% of people over 25 hold a 4-year college degree or higher. The per capita income in St. Clair in 2022 was $23,961, which is lower middle income relative to Missouri, and low income relative to the rest of the US. This equates to an annual income of $95,844 for a family of four. However, St. Clair contains both very wealthy and poor people as well. The people who call St. Clair home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of St. Clair residents report their race to be White, followed by Black or African-American. Important ancestries of people in St. Clair include German, Irish, English, Italian, and French. The most common language spoken in St. Clair is English. Other important languages spoken here include Italian and Polish.