Hurkos III was the inhabited third planet in the Hurkos system. This system was located in the Cygnus Sector. This planet was non-aligned. In 2344, Devinoni Ral, having grown uncomfortable among Humans on Earth, relocated to Hurkos III. (TNG: "The Price")
According to the Star Trek: Star Charts ("United Federation of Plaents I"), Hurkos III was a member planet of the Federation in 2378.