SATURN, TEXAS. Saturn, on State Highway 97 in northeastern Gonzales County, was originally called Possum Trot. The town secured a post office in 1902, but the office was closed in 1914. That year the settlement of some thirty-five residents included a general store, a gin, a blacksmith shop, a grocery, and a telephone connection. Population figures were thereafter unavailable until 1965, when fifteen residents were reported there. That population continued to be reported through 2000. The 2003 county highway map showed only a cemetery at the townsite.