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Black Jack, Missouri
Location of Black Jack, Missouri
Location of Black Jack, Missouri
Country United States
State Missouri
County St. Louis
 • Total 2.62 sq mi (6.80 km2)
 • Land 2.60 sq mi (6.74 km2)
 • Water 0.02 sq mi (0.05 km2)
607 ft (185 m)
 • Total 6,929
 • Estimate 
 • Density 2,657.70/sq mi (1,026.03/km2)
Time zone UTC-6 (Central (CST))
 • Summer (DST) UTC-5 (CDT)
ZIP code
Area code(s) 314
FIPS code 29-06004
GNIS feature ID 0755778
City of Black Jack
Black Jack, Missouri

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.


Black Jack is located at 38°47′27″N 90°15′43″W / 38.79083°N 90.26194°W / 38.79083; -90.26194 (38.790799, −90.261885).

According to the United States Census Bureau, the city has a total area of 2.60 square miles (6.73 km2), of which, 2.59 square miles (6.71 km2) is land and 0.01 square miles (0.03 km2) is water.


Historical population
Census Pop.
1970 4,145
1980 5,293 27.7%
1990 6,131 15.8%
2000 6,792 10.8%
2010 6,929 2.0%
2019 (est.) 6,918 −0.2%
City of Black Jack

2010 census

As of the census of 2010, there were 6,929 people, 2,591 households, and 1,797 families living in the city. The population density was 2,675.3 inhabitants per square mile (1,032.9/km2). There were 2,809 housing units at an average density of 1,084.6 per square mile (418.8/km2). The racial makeup of the city was 81.2% African American, 16.3% White, 0.1% Native American, 0.4% Asian, 0.2% from other races, and 1.8% from two or more races. Hispanic or Latino of any race were 0.7% of the population.

There were 2,591 households, of which 35.5% had children under the age of 18 living with them, 42.6% were married couples living together, 21.4% had a female householder with no husband present, 5.3% had a male householder with no wife present, and 30.6% were non-families. 27.2% of all households were made up of individuals, and 10.6% had someone living alone who was 65 years of age or older. The average household size was 2.58 and the average family size was 3.13.

The median age in the city was 40.9 years. 23.4% of residents were under the age of 18; 9.5% were between the ages of 18 and 24; 22% were from 25 to 44; 29.1% were from 45 to 64; and 16.1% were 65 years of age or older. The gender makeup of the city was 44.9% male and 55.1% female.

See also

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