About 85,000 people.

Sioux City sits in the far west corner of Iowa where three states meet along the Missouri River. It has long been an important place for farming and trade.
You can explore the Sioux City Public Museum, learn about explorers at the Lewis and Clark Interpretive Center, or enjoy the fun rides at a summer fair.
Famous explorers Lewis and Clark passed through here on their big journey, and a tall monument remembers a member of their team.
Stone State Park has hills and forests where you can hike and see the rolling grassy Loess Hills that are special to this area.