River Sioux is a community in Harrison County, Iowa, home to about 7 people across 0.4 square miles. It has no ZIP code of its own: it’s part of 51545.
Mostly Little Sioux; part is in River Sioux
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| Nearest major airport | Eppley Airfield (OMA)36 miles away |
|---|---|
| Nearest city of 250,000+ | Omaha, NE38 miles away |
| Nearest city of 1 million+ | Chicago, IL429 miles away |
Straight-line distances from the center of River Sioux; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
River Sioux had 42 residents in the 2020 census, down 29% since 2010.
It’s the 1012th largest of 1,019 towns in Iowa by population.
Harrison County grew from 25,597 residents in 1900 to 14,582 in 2020.
Harrison County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 86°F in summer, and winter lows average 9°F. About 39.8 inches of rain and melted snow fall in a typical year, with about 46 inches of snow.
Source: NOAA 1991–2020 climate normals, Little Sioux 2 Nw, IA weather station (2 miles away).
2,968 jobs at 338 businesses in Harrison County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2022 (private employers; jobs counted where people work).
Nearest hospitals
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances.
Parks (1 nearby)
Counts are within about 1 mile of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
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Shares ZIP codes with Little Sioux.
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.