occupancy
n. uncountable B2 Upper Intermediate US //ˈɑkjəpənsi// UK //ˈɒkjʊpənsi// oc·cu·pan·cy
n. the act of living in or using a building or room. It also refers to how many people are currently inside a space compared to how many it can hold.
n. the state of inhabiting or using a particular space; also refers to the proportion of a building or vehicle that is currently filled.
The hotel has a high occupancy rate this summer.
The fire marshal checked the room to ensure the total occupancy did not exceed the legal limit for the venue.
Urban planners monitor residential occupancy to determine whether the current housing supply meets the demands of the growing population or if new developments are necessary.
From occupant + -cy.
Usage
Often used in the compound 'occupancy rate' to describe the percentage of available space being used.