Spotting

The color of the pattern appears mostly deep red brown and a darker grey, typical of the young western ratsnake. Milksnakes also generally have thicker and more consistent banding across their back, whereas younger ratsnakes have a broken pattern, more spotty than consistent. Both species are found within the same range.
http://www.ratsnakefoundation.org/index....

I think it might be the Eastern Milk Snake because of the coloring pattern, more specifically the Y on the head. Here is it's living range:
http://srelherp.uga.edu/snakes/lamtri.ht...

The young rat snake often has this pattern which may act as a mimicking device to look like a young rattlesnake and fool possible predators. After just a few sheddings, the pattern disappears and a black back is dominant. In the eastern ratsnake (Pantherophis alleghaniensis) as well as the western ratsnake (P. obsoletus) the pattern can be seen, though barely, when the snake stretches it's skin.