Missouri · FIPS 29011 · County seat: Lamar
Barton County, MO GIS & Parcel Viewer
Barton County, Missouri parcel data lives on the Barton County parcel map. Open it below in a new tab, then use the short steps on this page to find a property fast.
Open the Barton County parcel map ↗
Opens barton.samgis.biz in a new tab. We link out and never embed or copy parcel data.
Barton County at a glance
| Official map | Barton County parcel map |
|---|---|
| Type | County-run map |
| Website | barton.samgis.biz |
| Access | Free, no login (checked Oct 2026) |
| County seat | Lamar |
| Population | 11,731 (2023 Census Bureau estimate) |
| Land area | 592 sq mi |
| FIPS code | 29011 |
Who runs this map
It is a county-level map: Barton County or the company it hires keeps the parcel layer up to date. When we tested the link in October 2026 it opened with no login and no fee.
Searching for a parcel, step by step
- Open the official link in a new tab.
- Accept any disclaimer, then look for a search box that takes street addresses, owners or parcel IDs.
- Zoom in and click a parcel to see its details.
- Use the map's layer controls to add aerials or other layers if they're offered.
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.
Barton County by the numbers
Barton County had an estimated 11,731 residents in 2023, according to the Census Bureau. With about 592 square miles of land, that works out to roughly 20 people per square mile. Among Missouri's 115 counties, it is the 78th largest by population. Lamar serves as the county seat.
Counties next to Barton County
Parcels close to the edge of Barton County can fall in the next county over. Neighboring counties:
Before you rely on the lines
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.