Sergeant Bluff is a city in Woodbury County, Iowa, United States.

[4] The city was named in honor of U.S. Army Sergeant Charles Floyd, a native of Kentucky who was one of the first men to enlist in the Lewis and Clark Expedition in the early 1800s.

[5] Just three months into the two-year journey, Floyd became violently ill and died the next day, August 20, 1804, of what is believed to have been a ruptured appendix.

In his honor, the expedition's leaders, Meriwether Lewis and William Clark, named the river Floyd River and the hill Floyd's Bluff, now part of Sioux City.

[12] According to the United States Census Bureau, the city has a total area of 2.11 square miles (5.46 km2), all land.

The Sioux Gateway Airport (SUX) is adjacent to Sergeant Bluff, on the floodplain of the Missouri River.

Interstate 29 cuts through the city, dividing residential and industrial areas.

17.7% of all households were made up of individuals, and 7.3% had someone living alone who was 65 years of age or older.

17.9% of all households were made up of individuals, and 5.4% had someone living alone who was 65 years of age or older.

Much of Sioux City's industry is located on the downstream side of Sergeant Bluff.

All of these are in the sprawling Port Neal Landing industrial park, which is surrounded by cornfields and the Missouri River.

The 185th Air Refueling Wing (ARW) of the Iowa Air National Guard operates KC-135R Stratotankers out of Sioux Gateway Airport (SUX), which is located just west of Sergeant Bluff.

The nearest long-distance coach service is at the bus terminal in Sioux City.