Waterman is a village in DeKalb County, Illinois, United States.

[2] The village is known for the DeKalb Ag seed corn processing plant, now owned by the German company, Bayer.

[5] As of the 2020 census[2] there were 1,433 people, 570 households, and 407 families residing in the village.

There were 591 housing units at an average density of 407.31 per square mile (157.26/km2).

24.39% of all households were made up of individuals, and 8.77% had someone living alone who was 65 years of age or older.