It is a community (often a separate town or city, but in some cases a town/city neighborhood or a district) that is dominated by its university population.
college town
20
I have a soft spot for little ______, especially ones that have adorable little roadside produce stands and scenic marsh views.
rural towns
25
In some metropolitan areas this town exists as a separate residential community within commuting distance of a city.
suburban town
20
Aguas Zarcas is still an undeveloped _____, most of the inhabitants earn their living from agriculture.