Is there data for this? I spent a good chunk of my life in a mid-sized college town in the south, and last I checked the average home values there are eclipsing $400K.
Just some data points, pulling median home values in some college towns across the US off the top of my head:
Davis, CA: $641,500
Charlottesville, VA: $412,700
Chapel Hill, NC: $449,980
State College, PA: $316,600
Williamsburg, VA: $303,400
Berkeley, CA: $1,281,900
Wellesley, MA: $1,267,600
Davidson, NC: $360,000
Ann Arbor, MI: $360,300
Some of these aren't too bad, but I don't think they fall into the category of extremely affordable. Professors and doctors and all the folks associated with Colleges and Universities make enough money to drive up home prices!