Iroquois is a village in Concord Township, Iroquois County, Illinois, United States, along the Iroquois River. In the 2000 census, the village had a population of 207.Iroquois is at 40°49'40" North, 87°35'1" West.According to the 2010 census, Iroquois has a total area of 0.6 square miles, all land.In the census of 2000, there were 207 people, 84 households, and 65 families in the village. The population density was 346.1 people per square mile. There were 94 housing units at an average density of 157.2 per square mile. The racial makeup was 98.55% White, 0% African American, 0% Native American, 0.48% Asian, 0% Pacific Islander, 0.00% from other races, and 0.97% from two or more races. 0% of the population were Hispanic or Latino of any race.There were 84 households out of which 32.1% had children under18 living with them, 65.5% were married couples living together, 6.0% had a female householder with no husband present, and 22.6% were non-families. 21.