St. Charles is a larger medium-sized city located in the state of Missouri. With a population of 70,329 people and 29 constituent neighborhoods, St. Charles is the ninth largest community in Missouri.

St. Charles real estate is some of the most expensive in Missouri, although St. Charles house values don't compare to the most expensive real estate in the U.S.

Unlike some cities, St. Charles isn’t mainly white- or blue-collar. Instead, the most prevalent occupations for people in St. Charles are a mix of both white- and blue-collar jobs. Overall, St. Charles is a city of sales and office workers, professionals, and service providers. There are especially a lot of people living in St. Charles who work in office and administrative support (14.49%), sales jobs (12.22%), and management occupations (10.98%).

Also of interest is that St. Charles has more people living here who work in computers and math than 95% of the places in the US.

In addition, St. Charles is a college town. There are a lot of students in St. Charles attending college, and as a result St. Charles provides a number of services, amenities and opportunities geared to the needs and activities of students.

Not only is St. Charles a city with many college students, but it also retains many recent graduates who are looking to start new careers, creating a very large population of people who are young, single, educated, and upwardly-mobile. That’s because St. Charles is full of single people in their 20s and 30s and who have undergraduate or graduate degrees and are starting careers in professional occupations. This makes St. Charles a pretty good place for young, educated career starters looking to find many people like themselves, with good opportunities for friendships, socializing, romance, and fun.

The education level of St. Charles citizens is very high relative to the national average among all cities (21.84%): 35.12% of adults in St. Charles have a bachelor's degree or even advanced degree.

The per capita income in St. Charles in 2010 was $32,689, which is wealthy relative to Missouri, and upper middle income relative to the rest of the US. This equates to an annual income of $130,756 for a family of four. However, St. Charles contains both very wealthy and poor people as well.

St. Charles is a somewhat ethnically-diverse city. The people who call St. Charles home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of St. Charles residents report their race to be White, followed by Black or African-American. Important ancestries of people in St. Charles include German, Irish, English, Italian, and French.

The most common language spoken in St. Charles is English. Other important languages spoken here include Spanish and Langs. of India.