If you are a white middle-class suburbanite, be prepared to be surrounded by thousands of people just like you. It is a strange occasion to hear anyone refer to the University of Kentucky as diverse, and if they do, nobody takes them seriously. It is actually quite shocking that Kentucky has maintained such a homogenous population with the diversity of other ethnicities in the state.
A quick stroll through the Student Center during lunch time during a campus visit will give you the idea of what a black and white campus it is; there is a perfect division that is seldom crossed between students of different races. The lack of diversity is one of UK's setbacks and seems to be one of the limitations of the old-fashioned values the school is known for. If diversity is number one on your list of things you're looking for, UK is definitely not among those schools of varying ethnic backgrounds.