High Quality Content by WIKIPEDIA articles! Hutchinson is the largest city in and the county seat of Reno County, Kansas, United States, 39 miles (63 km) northwest of Wichita, on the Arkansas River. It has been home to salt mines since 1887, thus its nickname of "Salt City", but locals call it "Hutch". As of the 2010 census, the city population was 42,080.