Collett, IndianaCollett is an unincorporated community in Pike [Township, Jay County, Indiana|Pike Township], Jay [County, Indiana|Jay County], Indiana.HistoryCollett was platted in 1872, at the time the railroad was extended to that point. It was named for its founder, John Collett. A post office was established at Collett in 1872, and remained in operation until it was discontinued in 1922.