Black Jack, Missouri

Black Jack, Missouri
Location of Black Jack, Missouri
Coordinates: 38°47′57″N 90°15′51″W / 38.79917°N 90.26417°W / 38.79917; -90.26417
CountryUnited States
StateMissouri
CountySt. Louis
Government
  MayorNorman McCourt
Area
  Total
2.61 sq mi (6.75 km2)
  Land2.59 sq mi (6.70 km2)
  Water0.02 sq mi (0.05 km2)
Elevation
574 ft (175 m)
Population
 (2020)
  Total
6,634
  Density2,565.35/sq mi (990.39/km2)
Time zoneUTC-6 (Central (CST))
  Summer (DST)UTC-5 (CDT)
ZIP code
63033
Area code314
FIPS code29-06004
GNIS feature ID2394179
Websitecityofblackjack.com

Black Jack is a second-ring suburb of St. Louis, located in northern St. Louis County, Missouri, United States. The population was 6,929 at the 2010 census.

A post office called Black Jack was established in 1872, and operated until 1906. The community was named for a grove of blackjack oak trees near the original town site.