Written and Fact-checked by Whereig Editors | Last Updated On: June 10, 2026
Map of Monona County - Monona County is a county located in the U.S. state of Iowa. Monona County Map showing cities, highways, important places and water bodies. Get Where is Monona County located in the map, major cities in Monona county, population, areas, and places of interest.
Monona County Map, Iowa
About Monona County Map, Iowa: The map showing the county boundary, county seat, major cities, highways, water bodies and neighbouring counties.
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Map of Monona County, Iowa
Monona County is a county located in the U.S. state of Iowa. It's county seat is Onawa. As per 2020 census, the population of Monona County is 8574 people and population density is square miles. According to the United States Census Bureau, the county has a total area of 693 sq mi (1,795 km2). Monona County was established on -17881.
Monona County Facts
| Continent | North America |
| Country | United States |
| State | Iowa |
| County Seat | Onawa |
| Largest City/Town | Onawa |
| Established | January 15, 1851 |
| Total Area | 699 sq mi (1,810 sq km) |
| Land Area | 694 sq mi (1,797 sq km) |
| Water Area | 5 sq mi (13 sq km) |
| Population | 8,751 (Census 2020) |
| Population Density | 12.6 people per sq mi |
| Time Zone | Central Time Zone (CT) |
| Major Highways | Interstate 29, U.S. Highway 75, Iowa Highway 37, Iowa Highway 175, Iowa Highway 141 |
| Major Rivers | Missouri River, Little Sioux River, Soldier River |
| Neighboring Counties | Woodbury County, Crawford County, Harrison County, Thurston County (NE), Burt County (NE) |
| Famous For | Loess Hills, Lewis and Clark history, Onawa, Blue Lake, Missouri River Valley |
| Top Attractions | Lewis and Clark State Park, Preparation Canyon State Park, Blue Lake Recreation Area, Monona County Historical Museum |
| Official Website | Official Website |
About Monona County, Iowa
Monona County is located in western Iowa along the Missouri River and was established in 1851. The county seat and largest city is Onawa. The county is known for its scenic Loess Hills landscapes, rich Native American and pioneer history, outdoor recreation opportunities, and fertile agricultural lands. Monona County is home to some of Iowa's most distinctive natural scenery and historical landmarks.
Cities and Towns in Monona County, Iowa
| City/Town | Population (Census 2020) | Latitude & Longitude |
|---|---|---|
| Onawa (county seat) | 2,906 | 42.0264°N, 96.0978°W |
| Mapleton | 1,224 | 42.1635°N, 95.7936°W |
| Whiting | 762 | 42.1270°N, 96.1525°W |
| Moorhead | 226 | 41.9147°N, 95.8550°W |
| Soldier | 174 | 41.9955°N, 95.7796°W |
| Ute | 374 | 42.0482°N, 95.7067°W |
| Turin | 72 | 41.9555°N, 95.9685°W |
| Blencoe | 224 | 41.9320°N, 96.0878°W |
| Castana | 111 | 42.0784°N, 95.9127°W |
Best Golf Courses in Monona County, Iowa
| Golf Course | Location | Latitude & Longitude |
|---|---|---|
| Onawa Country Club | Onawa | 42.0326°N, 96.1085°W |
| Mapleton Golf Club | Mapleton | 42.1674°N, 95.7998°W |
| Soldier Valley Golf Course | Ute | 42.0498°N, 95.7115°W |
What are Major Roads and Highways in Monona County
Major highways connect the county to nearby regions and cities.
- Interstate 29 - major north-south interstate along the Missouri River corridor
- U.S. Highway 75 - important route connecting Sioux City and Council Bluffs through western Iowa
- Iowa Highway 37 - serves Onawa and connects to nearby communities
- Iowa Highway 175 - east-west corridor through the northern portion of the county
- Iowa Highway 141 - regional route linking communities across western Iowa
Neighboring Counties of Monona County
- Woodbury County (north)
- Crawford County (east)
- Harrison County (south)
- Thurston County, Nebraska (west)
- Burt County, Nebraska (southwest)
What are Top Attractions in Monona County, Iowa
The county offers a mix of natural and cultural attractions.
| Main Sight Name | City | Famous For |
|---|---|---|
| Lewis and Clark State Park | Onawa | Camping, boating, fishing, and Lewis and Clark history |
| Preparation Canyon State Park | Moorhead | Loess Hills hiking and scenic landscapes |
| Blue Lake Recreation Area | Onawa | Water recreation and wildlife viewing |
| Monona County Historical Museum | Onawa | County history exhibits and pioneer artifacts |
| Loess Hills Scenic Byway | Countywide | Unique geological formations and scenic drives |
| Onawa Railroad Museum | Onawa | Railroad history and local heritage |
| Mapleton Museum | Mapleton | Community history and artifacts |
| Whiting Woods Recreation Area | Whiting | Outdoor recreation and nature trails |
| Soldier River Valley | Soldier | Scenic river landscapes and wildlife |
| Turin Historic Area | Turin | Historic small-town architecture |
| Castana Community Park | Castana | Family recreation and local events |
| Missouri River Valley Overlooks | Countywide | Scenic views and birdwatching opportunities |
Distance from Monona County to Nearby Cities
The following distances are measured by road (driving).
- Onawa to Mapleton (Monona County), Iowa - 17 mi (27 km)
- Onawa to Whiting (Monona County), Iowa - 7 mi (11 km)
- Onawa to Moorhead (Monona County), Iowa - 20 mi (32 km)
- Onawa to Ute (Monona County), Iowa - 23 mi (37 km)
- Onawa to Soldier (Monona County), Iowa - 18 mi (29 km)
- Onawa to Sioux City (Woodbury County), Iowa - 39 mi (63 km)
- Onawa to Denison (Crawford County), Iowa - 38 mi (61 km)
- Onawa to Logan (Harrison County), Iowa - 42 mi (68 km)
- Onawa to Tekamah, Nebraska - 24 mi (39 km)
- Onawa to Decatur, Nebraska - 16 mi (26 km)
- Onawa to Council Bluffs (Pottawattamie County), Iowa - 67 mi (108 km)
- Onawa to Omaha, Nebraska - 63 mi (101 km)
- Onawa to Sioux Falls, South Dakota - 96 mi (154 km)
- Onawa to Des Moines (Polk County), Iowa - 157 mi (253 km)
- Onawa to Cedar Rapids (Linn County), Iowa - 258 mi (415 km)
Nearest Airports
Nearest airport of Monona is Dubuque Regional Airport (DBQ / KDBQ).
References
- QuickFacts - U.S. Census Bureau
- United States Census Bureau
- United States Geological Survey (USGS)
- National Geodetic Survey
- Official Monona County Website
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