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The government of the City of Chicago, Illinois, is divided into executive and legislative branches. The Mayor of Chicago is the chief executive, elected by general election for a term of four years. The mayor appoints commissioners and other officials who oversee the various departments. In addition to the mayor, Chicago's two other citywide elected officials are the clerk and the treasurer.
The Chicago City Council is the legislative branch and is made up of 50 aldermen, one elected from each ward in the city. The council enacts local ordinances and approves the city budget. Government priorities and activities are established in a budget ordinance usually adopted each November. The council takes official action through the passage of ordinances and resolutions.
The United States Postal Service operates post offices in Chicago. The main Chicago Post Office is located at 433 West Harrison Street in the Near West Side community area. The post office is the only 24 hour post office in the United States.
City departments 
See also 
- ^ "Major Office Buildings." Chicago City and Neighborhood Guide. Retrieved on April 17, 2009.
- ^ "Richard Wright Immortalized on Postage." United States Postal Service. April 8, 2009. Retrieved on April 17, 2009.
- ^ "New York City's main post office stops 24-hour service." Associated Press. Friday April 17, 2009. Retrieved on May 5, 2009.
- ^ Mission. City of Chicago. Retrieved on 5 Feb 2011.
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