Momence is a city in Kankakee County, Illinois, United States. The population was 3,171 at the 2000 census, and 3,310 in 2010. It is part of the Kankakee–Bradley Metropolitan Statistical Area.
According to the 2010 census, Momence has a total area of 1.627 square miles (4.21 km2), of which 1.53 square miles (3.96 km2) (or 94.04%) is land and 0.097 square miles (0.25 km2) (or 5.96%) is water.
As of the census of 2000, there were 3,171 people, 1,159 households, and 784 families residing in the city. The population density was 2,316.3 people per square mile (893.7/km2). There were 1,223 housing units at an average density of 893.3 per square mile (344.7/km2). The racial makeup of the city was 89.18% White, 4.32% African American, 0.19% Native American, 0.09% Asian, 4.95% from other races, and 1.26% from two or more races. Hispanic or Latino of any race were 11.38% of the population.
There were 1,159 households out of which 32.6% had children under the age of 18 living with them, 51.3% were married couples living together, 11.3% had a female householder with no husband present, and 32.3% were non-families. 27.6% of all households were made up of individuals and 14.8% had someone living alone who was 65 years of age or older.