Sioux City metropolitan area
Sioux City Metropolitan Area | ||
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Skyline of Sioux City | ||
Map of Sioux City–Le Mars, IA–NE–SD CSA
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| Country | United States | |
| State | Iowa Nebraska South Dakota | |
| Principal city | Sioux City | |
| Time zone | UTC−6 (CST) | |
| • Summer (DST) | UTC−5 (CDT) | |
The Sioux City metropolitan statistical area, as defined by the United States Census Bureau, is an area consisting of four counties in three states – Iowa, Nebraska, and South Dakota, anchored by the city of Sioux City, Iowa. As of the 2020 census, the MSA had a population of 145,940. Plymouth County, Iowa, was removed from the definition of the MSA prior to the 2020 census.