Parts of NYC and Philly give SF a run for it's money but the homeless in Chicago, Milwaukee and Boston are neither as ubiquitous nor as troublesome as they are in the big cities on the west coast.
Until recently (not sure about the current status), NYC had a "right to shelter" so that people could have a place to stay for the night. This meant that they still had a lot of homelessness, but it wasn't nearly as visible as, say, San Francisco.