Iowa is in the tallgrass prairie of the North American Great Plains, historically inhabited by speakers of Siouan languages.The area of Sioux City was inhabited by Yankton Sioux when it was first reached by Spanish and French furtrappers in the 18th century.
Hispanic or Latino of any race were 10.89% of the population.
It became a major Entrepôt to the western Plains, including Mormons heading to Salt Lake City and speculators heading to Wyoming gold fields.
In 1891, the Sioux City Elevated Railway was opened and became the third steam powered elevated rapid transit system in the world, and later the first electric-powered elevated railway in the world after a conversion in 1892.
29.4% of all households were made up of individuals and 11.1% had someone living alone who was 65 years of age or older.
The average household size was 2.54 and the average family size was 3.14. 26.6% of residents were under the age of 18; 11.4% were between the ages of 18 and 24; 25.6% were from 25 to 44; 24% were from 45 to 64; and 12.4% were 65 years of age or older.