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Chicago is a city. The county Chicago is in is Cook County. The county seat of Cook County happens to be in Chicago. Actually, Chicago's City Hall and Cook County's County Building share the same building, half and half. The building is located between Randolph St. & Washington Blvd. with City Hall on the LaSalle St. (west) side and the County Building on the Clark St. (east) side.

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16y ago

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