Riverdale is a village in Cook County, Illinois, United States. The population was 13,549 at the 2010 census. The village shares its name with the bordering Riverdale neighborhood in Chicago. Riverdale is located at 41°38′26″N 87°37′50″W (41.640684, -87.630645).According to the 2010 census, Riverdale has a total area of 3.745 square miles (9.70 km2), of which 3.57 square miles (9.25 km2) (or 95.33%) is land and 0.175 square miles (0.45 km2) (or 4.67%) is water.As of the 2010 census, there were 13,549 people, 4,595 households, and 3,204 families residing in the village. The racial makeup of the village was 4.9% White, 94.0% African American, 0.5% Native American, 0.3% Asian, 0.1% Pacific Islander, 0.7% from other races, and 0.2% from two or more races. Hispanic or Latino of any race were 1.7% of the population.
Riverdale is divided between two congressional districts. Most of the city is in Illinois’ 2nd congressional district; the area west of Ashland Avenue and the area southwest of 141st and Halsted Streets are in the 1st district. The local government of Riverdale consists of six elected trustees, one elected village clerk, and one elected mayor. On April 9, 2013 incumbent mayor Deyon Dean was defeated by Trustee and mayor Lawrence Jackson was sworn in on May 2, 2013. In the history of the Riverdale Police Department, one officer has been killed while on duty .
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