First, welcome to Columbia. Hope you like it here.
In way of urban stations, it doesn’t offer much. KOPN 89.5 may offer some urban programming, but I’m not certain. KJLU 88.9 offers urban programming in the evenings and on weekends but is mostly smooth jazz.
When I first moved here in ‘01, KMJK 107.3 and KATZ-FM 100.3 could be picked up with a good car radio. I’m not sure if that’s still the case, though, as both stations have moved transmitters since then. (Plus, see below...)
I recommend getting a Bluetooth adapter and a smartphone. That’s how I do most of my radio listening. I actually use 107.3 for my Bluetooth FM transmitter.