Iowa · FIPS 19133 · County seat: Onawa
Monona County, IA GIS & Parcel Viewer
Looking for lot lines or a parcel number in Monona County, IA? The quickest route is the Monona County Beacon site, the county parcel map we keep on file for this county. We link straight to it and add a few tips for getting around.
Open the Monona County parcel map ↗
Opens beacon.schneidercorp.com in a new tab. We link out and never embed or copy parcel data.
Map and county facts
| Official map | Monona County Beacon site |
|---|---|
| Type | County-run map |
| Website | beacon.schneidercorp.com |
| Access | Free, no login (checked Oct 2026) |
| County seat | Onawa |
| Population | 8,493 (2023 Census Bureau estimate) |
| Land area | 694 sq mi |
| FIPS code | 19133 |
Where the parcel data comes from
Monona County runs this viewer (directly or through a contracted vendor), which makes it the closest thing to the source for local parcel lines. As of our October 2026 test, anyone could open it without signing in or paying.
Searching for a parcel, step by step
- Press the button above to open Beacon, the Schneider Geospatial parcel platform this county uses. Accept the usage terms if asked.
- Search by address, owner or parcel number, or zoom in and click a lot.
- From a parcel's pop-up, open the full record to see values, sales or building data where the county shares them.
- Switch layers on or off to compare parcels with aerials, zoning or other overlays.
Have a tax bill handy? The parcel or account number on it is usually the fastest way to search.
The county in brief
The U.S. Census Bureau estimated Monona County's population at 8,493 in 2023, spread over about 694 square miles of land, or roughly 12 people per square mile. By population it ranks 85th of 99 counties in Iowa. The county seat is Onawa.
Counties next to Monona County
Parcels close to the edge of Monona County can fall in the next county over. Neighboring counties:
- Crawford County (state list)
- Harrison County
- Ida County (state list)
- Woodbury County
- Burt County, NE
- Thurston County, NE
Maps vs. surveys
Keep in mind that a GIS parcel layer is a tax map, not a survey. For exact boundaries, look at the recorded deed and plat or hire a licensed land surveyor.