The leaves certainly do look like pear tree leaves. As for the specific kind of pear...well, that can be difficult to tell even if you know the tree's flowering time, fruit shape, fruit maturity times, leaf color, etc.
Yes that is a pear. I am from zone 3 WI. It looks like it was wanted at one time because it looks like it was topped three or more times to try and widen it out. Pears can grow very upright like forest trees. The leaves look somewhat like a siberian pear that i have grown for a hardy root stock. I have one that produces a crisp pear that sometimes ripens. The pear is large sometimes up to a pound and shaped like a Bartlett pear. Maybe the tree has a small fruit that you will have to use for juice, perry or wine. The tree might be self fertile. The large pear I have, some years has to be canned when it is harder than a potato. Maybe it is the cold summers here or the amount of shade it get from other trees or the daylength plus lack of sunshine in the fall. I think yours has some asian pear in it. Enjoy your pears.