Black Jack is a city located in Missouri. With a 2020 population of 6,912, it is the 109th largest city in Missouri and the 3967th largest city in the United States. Black Jack is currently declining at a rate of -0.09% annually and its population has decreased by -0.25% since the most recent census, which recorded a population of 6,929 in 2010. Black Jack reached it's highest population of 6,954 in 2015. Spanning over 3 miles, Black Jack has a population density of 2,655 people per square mile.
The average household income in Black Jack is $65,377 with a poverty rate of 14.47%. The median rental costs in recent years comes to $925 per month, and the median house value is $127,700. The median age in Black Jack is 32.5 years, 26.5 years for males, and 35.7 years for females. For every 100 females there are 81.0 males.