New Burnside is a village in Johnson County, Illinois, United States. The population was 242 at the 2000 census.In 1878, New Burnside peaked in population at 1,200 when the railroad ran through the middle of the town. The population decreased greatly when the railroad was replaced with a bike trail. The village was founded in 1872, and was a Cairo and Vincennes Railroad boom-town. Much of its founding was based on the same coal mining industry that grew Harrisburg and Carrier Mills, but slowly turned to an orchard based economy by 1900. It was named after Civil War general Ambrose Burnside.New Burnside is located at 37°34′45″N 88°46′19″W / 37.57917°N 88.77194°W / 37.57917; -88.77194.According to the 2010 census, New Burnside has a total area of 1.048 square miles, of which 1.04 square miles is land and 0.008 square miles is water.The village is located on US Route 45 and is east of the junction of Interstates 24 and 57.