Lone Jack is a city in Jackson County, Missouri, United States. The population was 1,050 at the 2010 U.S. Census.According to the United States Census Bureau, the city has a total area of 3.75 square miles (9.71 km2), all of it land.
Lone Jack was laid out in 1841. Its name comes from a single black jack tree that stood as a local landmark.On August 16, 1862 Federal troops were defeated in the Battle of Lone Jack by a much larger Confederate force. The fighting literally occurred on the main street and raged for five hours before the Federals withdrew. The Confederates were unable to hold the town following their victory because of converging Union forces from other commands.