Concord Township is one of twenty-six townships in Iroquois County, Illinois, United States. As of the 2010 census, its population was 466 and it contained 238 housing units.

Iroquois County is a county located in the northeast part of the U.S. state of Illinois. According to the 2020 United States Census, it has a population of 27,077. It is the only county in the United States named Iroquois. The county seat is Watseka. The county is located along the border with Indiana.