Missouri · FIPS 29125 · County seat: Vienna
Maries County, MO GIS & Parcel Viewer
Looking for lot lines or a parcel number in Maries County, MO? The quickest route is the Maries 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 Maries County parcel map ↗
Opens mariesgis.integritygis.com in a new tab. We link out and never embed or copy parcel data.
Quick facts
| Official map | Maries County IntegrityGIS map |
|---|---|
| Type | County-run map |
| Website | mariesgis.integritygis.com |
| Access | Free, no login (checked Oct 2026) |
| County seat | Vienna |
| Population | 8,430 (2023 Census Bureau estimate) |
| Land area | 527 sq mi |
| FIPS code | 29125 |
About the official source
Maries 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.
Searching for a parcel, step by step
- Press the button above to load the county's IntegrityGIS viewer in a new tab.
- When the disclaimer window appears, click Accept to start using the map.
- Type an address, owner or parcel number into the Search box at the top right, or open the Search tab for more options.
- Click a parcel (or use the Identify tool) to open its details, and use Layer List or Basemaps to change what the map shows.
Rural addresses don't always geocode well. When that happens, zoom in by hand and click the parcel, or search by owner name.
Maries County by the numbers
The U.S. Census Bureau estimated Maries County's population at 8,430 in 2023, spread over about 527 square miles of land, or roughly 16 people per square mile. That makes it number 96 out of 115 Missouri counties by population. The county seat is Vienna.
Counties next to Maries County
If the property sits near a county line, the parcel may belong to a neighbor. These counties border Maries County:
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.