Columbus is hardly a town, or a college town, the city/metro is 2million.
The university is located in the urban core, but away from downtown. Columbus is literally a functioning goverment/private sector city, with Ohio State acting as its own city in the northern part of the urban core.
Yes, columbus has a college/university section of the city (that has nearly the population of a medium sized city within it), but the university section is part of a larger city.
Ann Arbor, Madison to an extent still qualify as more college centric.