Census, the CSA had a population of 156,503 (though a July 1, 2009 estimate placed the population at 157,850). Metropolitan statistical areas (MSAs) Sioux City, Iowa (Woodbury County, Iowa; Plymouth County, Iowa; Dakota County, Nebraska; Dixon County, Nebraska; Wayne County, Nebraska; and Union County, South Dakota) Micropolitan statistical areas (μSAs) Vermillion (Clay County, South Dakota) Media Sioux City, Iowa has been featured in an Independent Lens series documenting bullying. The Sioux City metropolitan area is also featured in the book 100 Things to Do in Sioux City & Siouxland Before You Die by Lindsay Hindman (Reedy Press, Sept. 2020) See also Iowa census statistical areas Nebraska census statistical areas Siouxland South Dakota census statistical areas References Woodbury County, Iowa Plymouth County, Iowa Dakota County, Nebraska Dixon County, Nebraska Union County, South Dakota Metropolitan areas of Iowa Metropolitan areas of South Dakota Metropolitan areas of Nebraska