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is a city in Will County, Illinois, United States. The population was 13,329 at the 2000 census and the 2007 census population estimate was 20,463.
According to the United States Census Bureau, the city has a total area of 7.3 square miles (18.8 km²), of which, 7.2 square miles (18.5 km²) of it is land and 0.1 square miles (0.3 km²) of it (1.51%) is water.