Mendota is a city in LaSalle County, Illinois, United States, in the state's north-central region. The population was 7,372 at the 2010 census, and was estimated to be 7,204 by July 2015. It is part of the Ottawa-Peru, IL Micropolitan Statistical Area. Mendota is located approximately 70 miles east of Moline and 55 miles south of Rockford. The current mayor is David W. Boelk, an independent elected to a four-year term.