Missouri · FIPS 29021 · County seat: St. Joseph
Buchanan County, MO GIS & Parcel Viewer
Looking for lot lines or a parcel number in Buchanan County, MO? The quickest route is the Buchanan County IntegrityGIS map, 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 Buchanan County parcel map ↗
Opens buchanangis.integritygis.com in a new tab. We link out and never embed or copy parcel data.
Buchanan County at a glance
| Official map | Buchanan County IntegrityGIS map |
|---|---|
| Type | County-run map |
| Website | buchanangis.integritygis.com |
| Access | Free, no login (checked Oct 2026) |
| County seat | St. Joseph |
| Population | 82,956 (2023 Census Bureau estimate) |
| Land area | 408 sq mi |
| FIPS code | 29021 |
About the official source
This map is published by or for Buchanan County itself, so it reflects the local parcel layer rather than a third-party copy. Our October 2026 check found the map open to the public, with no account or payment needed.
Searching for a parcel, step by step
- 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.
Rural addresses don't always geocode well. When that happens, zoom in by hand and click the parcel, or search by owner name.
About Buchanan County
The U.S. Census Bureau estimated Buchanan County's population at 82,956 in 2023, spread over about 408 square miles of land, or roughly 203 people per square mile. Among Missouri's 115 counties, it is the 15th largest by population. St. Joseph serves as the county seat.
Neighboring counties
Parcels close to the edge of Buchanan County can fall in the next county over. Neighboring counties:
Maps vs. surveys
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.