We ordered 500 gallons of propane for last winter and had enough left over to cook on the stove with all summer, still have some left.
We have propane forced air heat in about a 2000 sq foot ranch.
We also have an outdoor woodburning furnace, I used that a lot last winter until I ran out of wood, so that helps keep our propane use down. We also had a home energy audit done with one of those blower doors to identify air leaks, hopefully I have a lot of those sealed up for this winter.