Here in Michigan we often get an almost identical looking snake. If yours were here I would say it is an Eastern Milk Snake but we don't have Kingsnakes which I believe can look very similar. Do a little google search on "Milk snake" and you will see that they come in many color and marking variations, but around here the markings yours has is vary common. I think a lot of people discount the possibility of having a Milk snake because they see a picture that doesn't look anything like what you have and so assume that it is something else when in fact the color variation in the Milk snake is huge. As I remember, it's an adaptive strategy in which the species evolves to look like something more deadly than what it really is. Hence, some have developed to mimic coral snakes while others, like the Eastern Milk snake can mimic rattlers. Anyway, a little time Googling images for "Milk snake" may give you some ideas. Also, a Google for a distribution map of Milk Snakes does include Arkansas so it might be worth checking out.
As an aside, As my three kids were growing up, they often caught and kept a variety of snakes. One of their favorites was always the Milk Snake. A bit wild and aggressive when first caught, they seemed to tame quickly and were very easy to keep. They ate everything from mice and frogs to Garter snakes and never lost a one - every one being returned to the wild in good health and several sheds larger. They are beautiful and, whatever yours is, I was glad to see you get yours cleaned up and released. :thumbsup:
