University of Illinois-Chicago (but it’s something of a commuter campus, but there are plenty of dorms);
Loyola, Chicago
University of Chicago
Georgetown
St. Louis University
Washington University, St. Louis
Butler University, Indianapolis IN
Macalester, St. Paul MN
Hamline, St. Paul MN
University of St. Thomas, St. Paul MN
Augsburg College, Minneapolis MN
University of Minnesota-Twin Cities (not sure if the campus is contained or scattered throughout the surrounding neighborhood…)
University of Nebraska-Lincoln (how big does the town need to be?)