Webster's Revised Unabridged Dictionary · 1913

Inhabitance

Inhabitance , noun

1.
The act of inhabiting, or the state of being inhabited; the condition of an inhabitant; residence; occupancy.
Ruins yet resting in the wild moors testify a former inhabitance. — Carew
2.
(Law) The state of having legal right to claim the privileges of a recognized inhabitant; especially, the right to support in case of poverty, acquired by residence in a town; habitancy.

Also: Inhabitancy