My community college doesn't have any such group, to my knowledge (though it does have a disability support center which I used during my first semester). I'm sure a lot of colleges will have specialized support centers for students with disabilities, but they're really for classroom accomodations and not for social meetings.
There is always the option of starting your own autism support group on campus, but the rules on my campus state that we need at least five students who would be interested in joining a club before we start one. I don't know if that's the rule on other campuses, though.
Here's a link to a list of some college campuses that do have autism support groups. See if you find this at all helpful.
http://www.bestcollegesonline.com/blog/2011/05/25/10-impressive-special-college-programs-for-students-with-autism/
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What fresh hell is this?