South Sioux City is a city in Dakota County, Nebraska, United States. It is located immediately across the Missouri River from Sioux City, Iowa, and is part of the Sioux City, IA-NE-SD Metropolitan Statistical Area.
As of the 2020 census, the city population of South Sioux City was 14,029, making it the 14th largest city in the state of Nebraska.
Interstate 129 is a short east–west spur beginning at Interstate 29 in Sioux City. It enters South Sioux City via a bridge over the Missouri River and crosses the southern end of South Sioux City with interchanges at Dakota Avenue (the city's main street) and U.S. Route 77. Interstate 129 overlaps U.S. routes 20 and 75.
U.S. Route 77 is a north–south highway whose northern terminus is at Interstate 29 in Sioux City. From there, it enters South Sioux City via the Siouxland Veterans Memorial Bridge. Interstate 29 (I-29) is a north–south Interstate Highway which closely parallels the Missouri River. I-29 enters Iowa from Missouri near Hamburg and heads to the north-northwest through the Omaha–Council Bluffs and the Sioux City areas. It exits the state by crossing the Big Sioux River into South Dakota.
Sioux Gateway Airport is located in Sioux City Iowa, within a 15 minute drive from South Sioux City. Eppley Airfield is located in Omaha Nebraska that is located south of South Sioux City and about 1 1/2 drive on I-29 Interstate
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