River SiouxIA
The town was settled in 1878 and has 7 residents today.
Is River Sioux a good place to live?
Of the 141 Iowa towns we compare, none has a higher share of households owning their home than River Sioux. River Sioux has fewer than 1,000 residents, too few for fair grades; the figures below are still real.
7 people, and everyone knows the way
In a town this size, neighbors are the best guide. Ask them anything.
Moving to River Sioux: who provides what
River Sioux is unincorporated, so Harrison County and regional agencies provide most services.
EPA SDWIS (Oct 9, 2026) · HIFLD + EIA-861 2025 · Census 2020 ZCTAs · NCES 2024–25 · registration: vote.gov, updated Nov 18, 2024.
The data
Ordered by what stands out in River Sioux.
Top of a high hazard risk in River Sioux: inland flooding
River Sioux’s FEMA hazard score stands at 74 of 100, above both Iowa’s towns (40 of 100) and U.S. towns (44 of 100). 49% of the town’s expected losses from natural hazards come from inland flooding, followed by drought at 14%.
FEMA National Risk Index · OpenFEMA
Snowy winters and pleasant summers in River Sioux
Among 141 Iowa towns, just 8 have a higher peak summer temperature than River Sioux. July afternoons reach 86°, January nights drop to 12° and about 46 inches of snow falls in a winter.
Typical low → high °F
NOAA U.S. Climate Normals, 1991–2020
Compared with most of Iowa and the rest of the country, more of River Sioux’s adults have high blood pressure
32% of River Sioux adults sleep under 7 hours. Only 5 of the 141 Iowa towns we compare have a lower share of adults who feel lonely than River Sioux. On the CDC’s 32 measures, River Sioux is ahead of Iowa on 3 and behind on 9.
| River Sioux | Iowa towns | U.S. towns | |
|---|---|---|---|
| High blood pressure (CDC PLACES) | 41% | 35% | 35% |
| Feel lonely (CDC PLACES) | 29% | 32% | 33% |
| Diabetes (CDC PLACES) | 14% | 12% | 12% |
| Yearly checkup (CDC PLACES) | 81% | 78% | 79% |
| What stands out | River Sioux | IA |
|---|---|---|
| More adults treating high blood pressure | 82.7% | 77.8% |
| More adults getting a yearly checkup | 81.3% | 77.5% |
| More adults with heart disease | 8.9% | 6.6% |
CDC PLACES 2025 · modeled estimates for adults · CMS · HRSA
Everything we know about River Sioux
Colleges nearby
None within 15 miles of River Sioux; the nearest are
About 0 of every 100 River Sioux residents are enrolled in college, against 6 across Iowa.
About River Sioux
Census-designated place in Iowa, USA
River Sioux is an unincorporated community and census-designated place in Harrison County, Iowa, United States. As of the 2020 Census the population was 42.
From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)
- Area
- 0.4 sq mi
- Elevation
- 1,038 ft
Questions about River Sioux
Short answers, built from the data on this page.
Is River Sioux, IA a good place to live?
River Sioux has fewer than 1,000 residents, too few for fair grades; the figures below are still real.