St. Peters is a city in St. Charles County, Missouri, United States.

Interstate 70 passes through the city, providing a major transportation link.

In 2008, St. Peters was named the 60th best place to live by Money magazine, putting it at the top in the state of Missouri.

The city also hosts the county's largest shopping center, Mid Rivers Mall.

[3] Prior to the arrival of Europeans, the area that would become St. Peters was inhabited by Mississippian mound builders.

[6] In 1895, music was a binding factor for the area, with a well-known cornet band.

[8] During flooding in the region, the National Weather Service reported 12.3 inches (310 mm) of rainfall in St. Peters for July 26, 2022,[9] considered an unofficial record.

[11] According to the United States Census Bureau, the city has a total area of 22.37 square miles (57.94 km2), all land.

[12] The 2020 United States census[16] counted 57,732 people, 22,766 households, and 15,215 families in St. Peters.

Of all households, 28.7% consisted of individuals and 12.9% had someone living alone who was 65 years of age or older.

26.3% of all households were made up of individuals, and 9.5% had someone living alone who was 65 years of age or older.

20.3% of all households were made up of individuals, and 6.4% had someone living alone who was 65 years of age or older.

Outdoor amenities include: recreation trails, playgrounds, picnic shelters and pavilions, athletic fields, fishing ponds, and landscape areas.

Citizens elect a mayor and eight aldermen (two for each of four wards) to govern the city.

Propositions may be voted upon at these elections, or others held in February, August or November.

[32] Mayor – Len Pagano Aldermen[33] Ward 1 – Joyce Townsend and Rocky Reitmeyer Ward 2 – Judy Bateman and Randy Green Ward 3 – Dave Kuppler and Melissa Reimer Ward 4 – Nick Trupiano and Patrick Barclay Three public high schools are within St. Peters city limits: Fort Zumwalt South High School with an enrollment of 1,700 students, Francis Howell North High School (1,690 students), and Fort Zumwalt East High School (1,100 students) which opened in 2007.

The city limits also contain the private Lutheran High School of St Charles County.