St. Mary had a number of nicknames, including Camp Rowdy and Yankeetown.

[4] Eventually, the community came to be known as St. Mary's Landing and then simply as St.

[5] The small city was established by settlers of French descent, who also built St. Mary's Catholic Church.

The community is bordered by Saint Laurent Creek to the south and Saline Creek to the north, with an offshoot of the Mississippi separating it from Kaskaskia Island to the east.

35.8% of all households were made up of individuals, and 15.7% had someone living alone who was 65 years of age or older.

As of the census[3] of 2000, there were 377 people, 167 households, and 100 families living in the city.

32.3% of all households were made up of individuals, and 15.0% had someone living alone who was 65 years of age or older.

Sonny Siebert, baseball player who pitched for six different teams during his MLB career and was twice an All-Star