Oxford Mills, IowaOxford Mills is an unincorporated community in Jones County, Iowa, United States. Oxford Mills is located on the Wapsipinicon River, south of Oxford Junction.HistoryOxford Mills was the first settlement in Oxford Township. It was named after a gristmill built there in 1857. A post office operated in Oxford Mills from 1862 to 1918 The population was estimated at 200 in 1940.