I think the “bubble effect” at some urban campuses has diminished somewhat in recent years. The area around the Penn campus has gentrified markedly, as has Hyde Park in Chicago. Morningside Heights, where Columbia and Barnard are located, is now part of the increasingly upscale and unaffordable Upper West Side, and even Harlem is gentrifying rapidly. Fordham’s Rose Hill campus might fit your description a little better.