Iowa · FIPS 19125 · County seat: Knoxville
Marion County, IA GIS & Parcel Viewer
Looking for lot lines or a parcel number in Marion County, IA? The quickest route is the Marion 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 Marion County parcel map ↗
Opens beacon.schneidercorp.com in a new tab. We link out and never embed or copy parcel data.
Quick facts
| Official map | Marion County Beacon site |
|---|---|
| Type | County-run map |
| Website | beacon.schneidercorp.com |
| Access | Free, no login (checked Oct 2026) |
| County seat | Knoxville |
| Population | 33,770 (2023 Census Bureau estimate) |
| Land area | 554 sq mi |
| FIPS code | 19125 |
Where the parcel data comes from
This map is published by or for Marion County itself, so it reflects the local parcel layer rather than a third-party copy. When we tested the link in October 2026 it opened with no login and no fee.
How to use the Marion County viewer
- 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.
Many parcel sites expect owner names last name first. If a full name finds nothing, try just the surname.
The county in brief
Marion County had an estimated 33,770 residents in 2023, according to the Census Bureau. With about 554 square miles of land, that works out to roughly 61 people per square mile. By population it ranks 21st of 99 counties in Iowa. Its county seat is Knoxville.
Counties next to Marion County
Parcels close to the edge of Marion County can fall in the next county over. Neighboring counties:
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.