Marseilles, Illinois
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Marseilles is a city in LaSalle County, Illinois, United States. An Illinois River town, the population was 4,845 at the 2020 census, down from 5,094 at the 2010 census. It is part of the Ottawa, IL Micropolitan Statistical Area.
Buildings in the city's business district
1938 WPA mural, "Industrial Marseilles" by Avery Johnson. in Marseilles Post Office
LaSalle County, Illinois
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LaSalle County is located within the Fox Valley and Illinois River Valley regions of the U.S. state of Illinois. As of the 2020 Census, it had a population of 109,658. Its county seat and largest city is Ottawa. LaSalle County is part of the Ottawa, IL Micropolitan Statistical Area of Northern Illinois.
LaSalle County Courthouse, Ottawa, Illinois