North Sioux City, SD
North Sioux City is a city in Union County, South Dakota, United States. The population was 2,530 at the 2010 census. It is part of the Sioux City, IA–NE–SD Metropolitan Statistical Area.
North Sioux City is located at 42°31′52″N 96°29′44″W / 42.53111°N 96.49556°W / 42.53111; -96.49556 (42.530999, -96.495494), bounded on the east by the Big Sioux River and on the west by the oxbow McCook Lake.
According to the United States Census Bureau, the city has a total area of 2.3 square miles (5.9 km²), of which, 2.2 square miles (5.8 km²) of it is land and 0.04 square miles (0.1 km²) of it (1.32%) is water.