Who? - The elected leader of a municipal government. "The Chief Executive Officer of the city."

What? - Oversees a city's main departments, including the police, fire, education, housing and transportation departments.

By Mail:

City Hall
121 N. LaSalle Street
Chicago, Illinois 60602

By Phone:

Dial 311 (within Chicago)

If calling from outside of Chicago, call: 312.744.5000