About This Place
Sioux City ( /ˌsuːsɪti/) is a city in Plymouth and Woodbury counties in the western part of the U.S. state of Iowa. The population was 82,684 in the 2010 census, a decline from 85,013 in the 2000 census, which makes it currently the fourth largest city in the state.
Sioux City is the primary city of the four-county Sioux City, IA–NE–SD Metropolitan Statistical Area (MSA), with a population of 143,005 in 2000 and a slight increase to an estimated 144,360 in 2009. The Sioux City-Vermillion, IA-NE-SD Combined Statistical Area had a population of 156,503 as of 2000 and has grown to an estimated population of 157,850 as of 2009.
Sioux City is at the navigational head of the Missouri River, about 95 miles north of the Omaha-Council Bluffs metropolitan area. Sioux City and the surrounding areas of northwestern Iowa, northeastern Nebraska and southeastern South Dakota are sometimes referred to as Siouxland, especially by the local media.