@codecat UWash Seattle is lovely, in Seattle and “self-contained.” They’re not American, but both UCB (British Columbia) and UofToronto have very nice urban campuses. (UCB is kind of “outside” Vancouver, but only because it’s out on the cliffs overlooking the pacific. Kind of like UCSD or UCSB of the north.). If you want to look further afield: USD and UCSD in San Diego (UCSD is a bit “out of town” really - but in a nice part of “out of town”, USC, LMU, UCLA, Occidental in LA. Emory in Atlanta (all with various amounts of "self containment).
It would be helpful to get some parameters for stats, what you can afford etc. because really, if you are willing to call New Haven or Providence “urban” there are hundreds of choices.
RISD, Art Center Pasadena (tiny), CMU…