Black Jack is a city located in Missouri. With a 2020 population of 6,919, it is the 108th largest city in Missouri and the 3974th largest city in the United States. Black Jack is currently declining at a rate of -0.12% annually and its population has decreased by -0.14% 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 2,658 people per square mile.
The average household income in Black Jack is $65,065 with a poverty rate of 11.12%. The median rental costs in recent years comes to $811 per month, and the median house value is $128,200. The median age in Black Jack is 40.3 years, 36.1 years for males, and 42.1 years for females. For every 100 females there are 86.8 males.