Monona County, Iowa
Monona County: county in Iowa, United States
About
Monona County is a county located in the U.S. state of Iowa. As of the 2010 census, the population was 9,243 and a population density of 5 people per km². After 10 years in 2020 county had an estimated population of 8,598 inhabitants. Its county seat is Onawa. The county was created 175 years ago in 1850.
County Snapshot
Monona County at a glance
Monona County currently has 10 quality-checked populated place pages linked on MapSof, making it easier to jump from the county overview into local city pages.
Mapped populated places
10
These counts use a stricter populated-place filter so the main lists stay focused on real city and town pages.
Iowa counties
99
Open related pagesLargest city
OnawaPopulation 2,766
Top linked places
Quick Facts about Monona County
| Population | 8,598 (2020) |
| Country | United States of America |
| State | Iowa (United States) |
| Different from | Monona |
| Area | 1795 km2 |
| Water as percent of area | 0.7% |
| Land as percent of area | 99.3% |
| Latitude & Longitude | 42.0517,-95.9599 |
| Altitude | 1,266 feet / 386 meters |
| Capital | Onawa |
| Establishment | January 01, 1851 |
| Time Zone | America/Chicago |
| Local time | 08:31:36 (17th April 2026) |
| Density | 5 Pop. per km² as of 2020 |
| Population growth | -7.5% (2010-2020) |
| Weather | 70℉ Slight Chance Rain Showers 7-days weather |
Geography
Monona County is located at 42°3'6"N 95°57'36"W (42.0516700, -95.9599200). It has 2 neighbors: Harrison County and Woodbury County.
Monona County map
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The largest city of Monona County is Onawa with a population of 2,766. Other cities include, Mapleton population 1,147, Whiting population 721, Ute population 337 and Moorhead population 202. See all Monona County cities & populated places.
Monona County Populated Places
Cities, towns, neighborhoods & other populated places in Monona County.
| City Name | Population | Title |
|---|---|---|
| Onawa | 2,766 | City in Iowa |
| Mapleton | 1,147 | City in Monona County, Iowa, United States |
| Whiting | 721 | City in Monona County, Iowa, United States |
| Ute | 337 | City in Monona County, Iowa, United States of America |
| Moorhead | 202 | City in Iowa, United States |
| Blencoe | 196 | Human settlement in United States of America |
| Soldier | 168 | City in Iowa, United States |
| Castana | 133 | Human settlement in Monona County, Iowa, United States of America |
| Turin | 63 | City in Iowa, United States |
| Rodney | 57 | City in Monona County, Iowa |
Weather
A slight chance of rain showers after 7am. Partly sunny, with a high near 70. West southwest wind 14 to 23 mph, with gusts as high as 36 mph. Chance o...
7-Day Forecast- Onawa
Demographics
According to census records, the population of Monona County decreased by 7.5% in 10 years.
| Year | Population | % Change | Method |
|---|---|---|---|
| 1900 | 17,980 | - | demographic balance |
| 1910 | 16,633 | -8.1% | demographic balance |
| 2010 | 9,243 | -79.95% | census |
| 2011 | 9,238 | -0.05% | estimation process |
| 2012 | 9,091 | -1.62% | estimation process |
| 2013 | 9,032 | -0.65% | estimation process |
| 2014 | 8,899 | -1.49% | estimation process |
| 2015 | 8,866 | -0.37% | estimation process |
| 2016 | 8,786 | -0.91% | estimation process |
| 2017 | 8,724 | -0.71% | estimation process |
| 2018 | 8,659 | -0.75% | estimation process |
| 2019 | 8,615 | -0.51% | estimation process |
| 2020 | 8,598 | -0.2% | estimation process |
People born in Monona County (2)
People born in Monona County, including politician William H. McMaster, Glenn Drahn, .
More notable people
Iowa Other Counties (more counties)
| County Name | Population | Title |
|---|---|---|
| Indiana | 820,445 | A city located in the state of Iowa. |
| Polk County | 494,281 | County in Iowa, United States |
| Linn County | 227,854 | County in Oregon, United States |
| Des Moines | 212,312 | The capital of Iowa. |
| Scott County | 173,216 | County in Tennessee, United States |
| Johnson County | 153,740 | County in Iowa, United States |
| Cedar Rapids | 134,027 | The second most populous city in Iowa. |
| Black Hawk County | 130,786 | County in Iowa, United States |
| Woodbury County | 103,138 | County in Iowa, United States of America |
| Davenport | 101,799 | The most populous city in Scott County, Iowa. |
| Story County | 98,237 | County in Iowa, United States |
| Dubuque County | 97,590 | County in Iowa, United States |
| Dallas County | 96,963 | County in Iowa, United States |
| Pottawattamie County | 93,328 | County in Iowa, United States of America |
| Sioux City | 82,651 | The second most populous city in Iowa. |
| Iowa City | 75,130 | The most populous city in Johnson County, Iowa. |