Missouri · FIPS 29079 · County seat: Trenton
Grundy County, MO GIS & Parcel Viewer
Parcel lookups for Grundy County start at the Grundy County IntegrityGIS map. This page gives you that official link, notes on how the viewer works, and links to the counties next door.
Open the Grundy County parcel map ↗
Opens grundygis.integritygis.com in a new tab. We link out and never embed or copy parcel data.
Grundy County at a glance
| Official map | Grundy County IntegrityGIS map |
|---|---|
| Type | County-run map |
| Website | grundygis.integritygis.com |
| Access | Free, no login (checked Oct 2026) |
| County seat | Trenton |
| Population | 9,815 (2023 Census Bureau estimate) |
| Land area | 435 sq mi |
| FIPS code | 29079 |
About the official source
Grundy 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.
Finding a property on this map
- Open the official link; the map loads with the county outline and a row of tool tabs across the top.
- When the disclaimer window appears, click Accept to start using the map.
- Zoom toward the property with the + button or your mouse wheel, or use the search field in the upper right corner.
- Select a lot to see the record the county publishes. The I want to... menu and the Tasks tab hold extra tools such as bookmarks and printing.
Many parcel sites expect owner names last name first. If a full name finds nothing, try just the surname.
The county in brief
Grundy County had an estimated 9,815 residents in 2023, according to the Census Bureau. With about 435 square miles of land, that works out to roughly 23 people per square mile. By population it ranks 87th of 115 counties in Missouri. Trenton serves as the county seat.
Neighboring counties
If the property sits near a county line, the parcel may belong to a neighbor. These counties border Grundy County:
- Daviess County (state list)
- Harrison County (state list)
- Linn County (state list)
- Livingston County
- Mercer County (state list)
- Sullivan County (state list)
A note on accuracy
Treat the map as a guide, not a boundary survey: parcel outlines are often shifted a bit from the real corners. A licensed surveyor settles exact lines.