Deer are commonly found in wooded areas, but that doesn't mean they're exclusive to the north country. According to Car Star, a network of collision repair centers, the top 10 deer danger states are Pennsylvania, Michigan, Illinois, Ohio, Georgia, Virginia, Minnesota, Texas, Indiana and South Carolina. Car Star also points out that since migration and mating season occur in the later part of the year, October through December is the most accident-prone for deer-vehicle collisions.