Millerton, KansasMillerton is an unincorporated community in Sumner County, Kansas, United States. It is located approximately five miles northeast of Conway Springs at the intersection of N Maple Rd and W 123rd Ave N, adjacent to the railroad.HistoryMillerton had a post office from 1875 until 1912, but the post office there was called Rolling Green until 1884.EducationThe community is served by Clearwater USD 264 public school district.