St. John, Missouri

St. John, Missouri
St. Charles Rock Rd., St. John, May 2013
Location of St. John, Missouri
Coordinates: 38°42′53″N 90°20′47″W / 38.71472°N 90.34639°W / 38.71472; -90.34639
CountryUnited States
StateMissouri
CountySt. Louis
Named afterJohn the Apostle
Area
 • Total
1.42 sq mi (3.69 km2)
 • Land1.42 sq mi (3.69 km2)
 • Water0 sq mi (0.00 km2)
Elevation
646 ft (197 m)
Population
 (2020)
 • Total
6,643
 • Density4,665.2/sq mi (1,801.26/km2)
Time zoneUTC-6 (Central (CST))
 • Summer (DST)UTC-5 (CDT)
FIPS code29-64478
GNIS feature ID2396495
Websitewww.cityofstjohn.org

St. John or Saint John is a city in St. Louis County, Missouri, United States, with its commercial district centered along St. Charles Rock Road. It is a few miles southeast of Lambert-St. Louis International Airport.

As of the 2020 census, the city population was 6,643.