High Quality Content by WIKIPEDIA articles! Yates City is a village in Knox County, Illinois, United States. The population was 725 at the 2000 census. It is part of the Galesburg Micropolitan Statistical Area. As of the census of 2000, there were 725 people, 299 households, and 209 families residing in the village. The population density was 1,235.2 people per square mile (474.4/km²). There were 322 housing units at an average density of 548.6/sq mi (210.7/km²). The racial makeup of the village was 98.90% White, 0.41% African American, 0.14% Native American, 0.28% from other races, and 0.28% from two or more races. There were 299 households out of which 28.8% had children under the age of 18 living with them, 61.2% were married couples living together, 6.7% had a female householder with no husband present, and 30.1% were non-families. 27.8% of all households were made up of individuals and 16.1% had someone living alone who was 65 years of age or older. The average household size was 2.42 and the average family size was 2.95.