Chicago City Hall

City Hall–County Building
View from Daley Plaza (2014)
Interactive map of the City Hall–County Building area
General information
Architectural styleNeoclassical architecture
LocationChicago
Coordinates41°53′02″N 87°37′54″W / 41.88386°N 87.631631°W / 41.88386; -87.631631
Completed1911 (1911)
Height
Height218 ft
Technical details
Floor count12
Floor area760,000 sq ft
Design and construction
ArchitectHolabird & Roche
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The City Hall–County Building, most commonly known as the Chicago City Hall, is a 12-story building in Chicago, Illinois, that houses the seats of government of the City of Chicago and Cook County. The building's west side (City Hall, 121 N. LaSalle St.) holds the offices of the mayor, city clerk, and city treasurer; some city departments; offices of alderpersons of Chicago's 50 wards; and the Chicago City Council's chambers. The building's east side (County Building, 118 N. Clark St.) houses offices of the Government of Cook County, including the Cook County Board of Commissioners' chambers.

The building spans a city block bounded by Randolph Street to the north, Washington Street to the south, Clark Street to the east, and LaSalle Street to the west. It is the seventh building to serve as Chicago's city hall, the fourth built at its location, and the third shared by the governments of Chicago and Cook County. Its location has served as the seat of the city and county governments since 1853, except for a period from 1871—when the Great Chicago Fire destroyed the building—to 1885.

The building was designed by the architectural firm Holabird & Roche in the classical revival style. Its two sections were finished three years apart: the county building (east) was completed in 1908; the city hall (west) was completed in 1911. It was officially dedicated on February 27, 1911.

The "fifth floor" is sometimes used as a metonym for the office and power of the mayor, whose office is located on the fifth floor of the building.