They're pretty widely found in the lower 48 states of the US. Here in Texas, their population is robust to the point of excess in many areas; auto collisions are a significant factor in their mortality. Oh, and they're a popular species for hunting; deer sausage is a common delicacy in season!
THey are a real problem here in western VA and WV. There are a lot of traffic accidents. They are also pretty tame, and will cheerfully sit in your yard and eat your flowers.