Do I have to return the item to the same library where I borrowed it?

No. You may return any item you have checked out from a Corvallis-Benton County Library to any of its locations. For example: you might check out an item from the Monroe branch, but you may return it to the Corvallis library. The Corvallis library and the branches of Philomath, Monroe and Alsea are all connected by a daily courier service.