A post office is located in Bruner on the north side of Route 14.[4] The post office was established in 1895.[2]
James A. Rathbun moved to the region in 1862 and settled near Keltner. About two years later he moved and established a store and post office near the current location of Bruner. He established a post office and settled on the name of Bruner after his first choice, Rathbun, was denied because a Rathbun office was already in use.[5]