interior — being within; inside of anything; internal; inner; further toward a center: the interior rooms of a house.
back country — The back country is an area that is a long way from any city and has very few people living in it.
boondocks — If you say that someone lives in the boondocks, you mean that they live a long way from any large cities.
central — Something that is central is in the middle of a place or area.
heartland — the part of a region considered essential to the viability and survival of the whole, especially a central land area relatively invulnerable to attack and capable of economic and political self-sufficiency.
hinterland — Often, hinterlands. the remote or less developed parts of a country; back country: The hinterlands are usually much more picturesque than the urban areas.
inward — toward the inside, interior, or center, as of a place, space, or body.
