Little Sioux is a city in Harrison County, Iowa, United States. The population was 170 at the 2010 census. The city is most known for Little Sioux Scout Ranch of the Boy Scouts of America.
Little Sioux was laid out in 1855.
Little Sioux is located at 41°48′33″N 96°1′21″W (41.809169, -96.022556).
According to the United States Census Bureau, the city has a total area of 0.37 square miles (0.96 km2), all of it land.
As of the census of 2010, there were 170 people, 78 households, and 51 families living in the city. The population density was 459.5 inhabitants per square mile (177.4/km2). There were 108 housing units at an average density of 291.9 per square mile (112.7/km2). The racial makeup of the city was 100.0% White. Hispanic or Latino of any race were 2.4% of the population.
There were 78 households, of which 23.1% had children under the age of 18 living with them, 46.2% were married couples living together, 12.8% had a female householder with no husband present, 6.4% had a male householder with no wife present, and 34.6% were non-families. 33.3% of all households were made up of individuals, and 14.1% had someone living alone who was 65 years of age or older.