Iowa · FIPS 19127 · County seat: Marshalltown
Marshall County, IA GIS & Parcel Viewer
Parcel lookups for Marshall County start at the Marshall County Beacon site. This page gives you that official link, notes on how the viewer works, and links to the counties next door.
Open the Marshall County parcel map ↗
Opens beacon.schneidercorp.com in a new tab. We link out and never embed or copy parcel data.
Marshall County's county seat is Marshalltown; the county covers about 573 square miles of land and had an estimated 40,014 residents in 2023, according to the U.S. Census Bureau. The parcel map linked above is a Beacon site from Schneider Geospatial; its search page lets you look up a property by owner name, address, parcel number or section, township and range.
More free maps of Marshall County
Free official maps from USGS, FEMA, USDA and USFWS. No login needed.
Marshall County at a glance
| Official map | Marshall County Beacon site |
|---|---|
| Type | County-run map |
| Website | beacon.schneidercorp.com |
| Access | Free, no login (checked Oct 2026) |
| County seat | Marshalltown |
| Population | 40,014 (2023 Census Bureau estimate) |
| Land area | 573 sq mi |
| FIPS code | 19127 |
Who runs this map
This map is published by or for Marshall County itself, so it reflects the local parcel layer rather than a third-party copy. As of our October 2026 test, anyone could open it without signing in or paying.
Finding a property on this map
- 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.
Rural addresses don't always geocode well. When that happens, zoom in by hand and click the parcel, or search by owner name.
Marshall County by the numbers
Census Bureau figures put Marshall County at about 40,014 people (2023 estimate) on roughly 573 square miles of land, which is about 70 residents per square mile. That makes it number 15 out of 99 Iowa counties by population. The county seat is Marshalltown.
Counties next to Marshall County
Parcels close to the edge of Marshall County can fall in the next county over. Neighboring counties:
Maps vs. surveys
The lines you see online are approximate. They're good for finding a lot and its parcel number, but a legal boundary question needs the recorded plat or a surveyor.