North Dakota · FIPS 38061 · County seat: Stanley
Mountrail County, ND GIS & Parcel Viewer
Looking for lot lines or a parcel number in Mountrail County, ND? The quickest route is the Mountrail County ArcGIS parcel 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 Mountrail County parcel map ↗
Opens portico.sidwellco.com in a new tab. We link out and never embed or copy parcel data.
Quick facts
| Official map | Mountrail County ArcGIS parcel map |
|---|---|
| Type | County-run map |
| Website | portico.sidwellco.com |
| Access | Free, no login (checked Oct 2026) |
| County seat | Stanley |
| Population | 9,383 (2023 Census Bureau estimate) |
| Land area | 1,825 sq mi |
| FIPS code | 38061 |
Who runs this map
This map is published by or for Mountrail 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; an ArcGIS Experience Builder app opens in a new tab. Accept any splash or disclaimer screen.
- Search by address or parcel ID, or pan to the area.
- Select a parcel to view the information the publisher makes available.
- Explore the app's panels for layers, legends or printing.
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.
The county in brief
Mountrail County had an estimated 9,383 residents in 2023, according to the Census Bureau. With about 1,825 square miles of land, that works out to roughly 5.1 people per square mile. That makes it number 16 out of 53 North Dakota counties by population. Stanley serves as the county seat.
Neighboring counties
Parcels close to the edge of Mountrail County can fall in the next county over. Neighboring counties:
A note on accuracy
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.