Montfort Advertising America

Chicago's advertising agencies cluster hard downtown. Zip 60654 leads with 37 listings, 60601 has 33, and 60611 carries 27, so River North, the Loop, and Streeterville are the places to start if location matters. Outside that core, zips like 60642 and 60607 still hold a solid handful of agencies, giving you options if you'd rather work with a team closer to a specific neighborhood.

Across all 376 agencies listed in Chicago, 373 show a phone number and 360 list a website, so most listings give you a real way to reach out. Call two or three in the zip closest to you and compare how they answer. Paid placements are labeled Sponsored here so you always know when a spot was purchased rather than earned by default order, and right now none of these agency listings carry that tag. If you manage one of these agencies and the phone or website field looks stale, you can claim the listing and update it yourself, which helps the next Chicago business find you faster.