Does Chicago have a Little Italy?

I have always thought that Chicago was just that All American city that every city in America should be modeled after, scaled down in many cases of course, but still. I was just curious about something. I have seen pictures or heard about all of these different areas of Chicago with an ethnic flavor to them. Greek, African American, Hispanic. I was just wondering, does Chicago have a perdominatly Italian neighborhood? I'm looking for street names, zip codes, that kind of thing.>