Iowa · FIPS 19123 · County seat: Oskaloosa
Mahaska County, IA GIS & Parcel Viewer
Use this page to reach the official county parcel map for Mahaska County, Iowa. The button below opens the Mahaska County Beacon site in a new tab, so you can look up parcels by address, owner or parcel number on the source site itself.
Open the Mahaska 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 | Mahaska County Beacon site |
|---|---|
| Type | County-run map |
| Website | beacon.schneidercorp.com |
| Access | Free, no login (checked Oct 2026) |
| County seat | Oskaloosa |
| Population | 21,874 (2023 Census Bureau estimate) |
| Land area | 571 sq mi |
| FIPS code | 19123 |
Where the parcel data comes from
Mahaska County runs this viewer (directly or through a contracted vendor), which makes it the closest thing to the source for local parcel lines. When we tested the link in October 2026 it opened with no login and no fee.
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.
If an address search comes up empty, try the parcel number from a tax bill or deed instead, or click the lot on the map.
About Mahaska County
The U.S. Census Bureau estimated Mahaska County's population at 21,874 in 2023, spread over about 571 square miles of land, or roughly 38 people per square mile. By population it ranks 28th of 99 counties in Iowa. Its county seat is Oskaloosa.
Counties next to Mahaska County
Parcels close to the edge of Mahaska County can fall in the next county over. Neighboring counties:
Before you rely on the lines
Online parcel lines are drawn for tax and planning use. They can be off by several feet, so use a recorded plat or a licensed surveyor for fences, setbacks or a sale.