Georgia.

Wasn't on the route but I took a detour down a dirt track and there it was. The signpost is for Decatur county which is in Georgia. Another one bagged. The bonus was that the dirt road took us (there were three of us) down past a local prison. There are lots of them in this part of the world. Some of the prisoners bereft of any meaningful pastimes tried to engage us in a spot of robust banter. Two of us continued on to the state line. One of our number decided to turn back, then promptly go lost. He caught up with us about an hour later. On the way back I waved and announced. "I'm on holiday". I think they'll have enjoyed that.