Hiya again, it's just me.
I found the wiki page on these snakes n they are very popular as pet snakes. Could be that it's an escapee from someones house in the neighborhood.
I don't think it's a buzztail or a bull snake (we have those round here all the time, hubby used to put bull snakes n buzz tails together in a horse tank n see who came out the winner) Corn snakes or as they're called round here rat snakes are pretty n lot's of peeps have em for pets.
My sis, who lives south of town here, has to always be on the lookout for buzztails, she has to watch where she steps before she gets out of the car n also to keep n eye on the porch to make sure one isn't hiding there.
O, BTW, buzztails is slang round here for rattlesnakes.
Anywho, here's the link to the wiki page about corn snakes or rat snakes. http://en.wikipedia.org/wiki/Corn_Snake#Variations
ETA: I think that corn snakes, or milk snakes or rat snakes are pretty much the same thing just different names attached to em from round the country.