Browse / United States / Iowa / Onawa
Onawa
Iowacity
Onawa
Total population
2,839
Median home value
$145,800
Bachelor's+
Median income
$62,143
Demographic figures from US Census Bureau · ACS 5-year estimates. Overview below cites Wikipedia and may reference a different year.
City facts
Overview
Onawa is a city in and the county seat of Monona County, Iowa, United States. The population was 2,906 at the time of the 2020 Census. It is the largest town on the Iowa side of the Missouri River between Council Bluffs and Sioux City.
Read more on WikipediaHistory & geography
History
Onawa was named for a character mentioned in the poem The Song of Hiawatha by Henry Wadsworth Longfellow. Onawa was platted in 1857, and the railway arrived to the city in 1867. The city is known for having the widest main street in the continental United States. Onawa was the site of a prisoner-of-war (POW) camp for captured German soldiers between 1944 and 1946. Historical documents indicate there were never more than 50 POWs in camp. A larger camp existed near the central Iowa town of Algona, and housed as many as 5,400 German POWs.
Geography
According to the United States Census Bureau, the city has a total area of , all land. Onawa is located in the Loess Hills region of western Iowa, a unique geological and environmental area. Nearby are such natural areas as Lewis & Clark State Park, Preparation Canyon State Park, and the Loess Hills State Forest.
Excerpted from the corresponding Wikipedia article (CC BY-SA).
Demographics & economy
Race & ethnicity
Source: US Census Bureau — American Community Survey, 5-year estimates.
Geography
Coordinates & boundaries from the US Census TIGER/Line shapefiles.
Climate
Current forecast
Forecast for Onawa, IA from NOAA NWS API.
Air quality
Industrial & pollution facilities
Natural hazard risk
Health (adults)
Age-adjusted prevalence estimates from CDC PLACES (latest release).
Walkability
Amenities nearby
Wildlife & biodiversity
Schools
Largest nearby schools
- West Monona ElementaryElementary · Onawa · 325 students · 14.8:1 ratio
- West Monona High SchoolHigh · Onawa · 204 students · 13.6:1 ratio
- West Monona Middle SchMiddle · Onawa · 105 students · 11.7:1 ratio
- Whiting Elementary SchoolElementary · Whiting · 91 students · 10.1:1 ratio
- Whiting Senior High SchoolHigh · Whiting · 79 students · 7.2:1 ratio
Public K–12 schools within ~10 mi from Urban Institute Education Data Portal (NCES Common Core of Data, 2022).
Earthquake history
Photos
Sights & places nearby
Notable people from here
Nearby places in Iowa
Geography & sun
Elevation, sunrise/sunset and daylight from Open-Meteo. Solar climatology from NASA POWER.
Nearby airports
Public attention
Pageview totals from the Wikimedia Pageviews API.
Books about Onawa

Search results from Open Library.
Recent natural events nearby
Ground air-quality sensors
Recently spotted species









Research-grade observations from iNaturalist (within ~15 mi).
Nearest stream gauge
Events
Gallery
Sources
- • Wikipedia
- • US Census Bureau (ACS 5-year estimates)
- • NOAA National Weather Service
- • NCES via Urban Institute Education Data Portal
- • iNaturalist
- • CDC PLACES
- • Open-Meteo / sunrise-sunset.org
- • Wikipedia Pageviews API
- • Open Library