Rockdale is a village in Will County, Illinois, United States. The population was 1,976 at the 2010 census.
Rockdale is located at 41°30′27″N 88°6′55″W / 41.50750°N 88.11528°W / 41.50750; -88.11528 (41.507480, -88.115233). It is immediately south of the city of Joliet, and is about 36 miles southwest of Chicago.
According to the 2010 census, Rockdale has a total area of 0.79 square miles (2.05 km), all land.
Rockdale was founded in 1894 by a group of local businessmen.
As of the census of 2000, there were 1,888 people, 762 households, and 473 families residing in the village. The population density was 2,377.4 people per square mile (922.7/km²). There were 826 housing units at an average density of 1,040.1 per square mile (403.7/km²). The racial makeup of the village was 82.89% White, 0.85% African American, 0.48% Native American, 0.37% Asian, 10.86% from other races, and 4.56% from two or more races. Hispanic or Latino of any race were 21.98% of the population.
There were 762 households out of which 30.2% had children under the age of 18 living with them, 45.0% were married couples living together, 10.8% had a female householder with no husband present, and 37.8% were non-families. 31.1% of all households were made up of individuals and 11.4% had someone living alone who was 65 years of age or older. The average household size was 2.47 and the average family size was 3.11.
The median income for a household in the village was $39,954, and the median income for a family was $47,232. Males had a median income of $35,761 versus $24,375 for females. The per capita income for the village was $18,738. About 7.7% of families and 9.3% of the population were below the poverty line, including 13.1% of those under age 18 and 4.5% of those age 65 or over.