North Dakota · FIPS 38055 · County seat: Washburn
McLean County, ND GIS & Parcel Viewer
Use this page to reach the official county parcel map for McLean County, North Dakota. The button below opens the McLean County ArcGIS parcel map in a new tab, so you can look up parcels by address, owner or parcel number on the source site itself.
Open the McLean County parcel map ↗
Opens portico.sidwellco.com in a new tab. We link out and never embed or copy parcel data.
Map and county facts
| Official map | McLean County ArcGIS parcel map |
|---|---|
| Type | County-run map |
| Website | portico.sidwellco.com |
| Access | Free, no login (checked Oct 2026) |
| County seat | Washburn |
| Population | 9,832 (2023 Census Bureau estimate) |
| Land area | 2,110 sq mi |
| FIPS code | 38055 |
Where the parcel data comes from
McLean County runs this viewer (directly or through a contracted vendor), which makes it the closest thing to the source for local parcel lines. Our October 2026 check found the map open to the public, with no account or payment needed.
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.
Many parcel sites expect owner names last name first. If a full name finds nothing, try just the surname.
McLean County by the numbers
McLean County had an estimated 9,832 residents in 2023, according to the Census Bureau. With about 2,110 square miles of land, that works out to roughly 4.7 people per square mile. Among North Dakota's 53 counties, it is the 15th largest by population. Census maps also count about 218 square miles of water inside its boundary. The county seat is Washburn.
Counties next to McLean County
McLean County shares a border with the counties below. Each link has its own official map:
- Burleigh County
- Dunn County
- McHenry County (state list)
- Mercer County
- Mountrail County
- Oliver County
- Sheridan County
- Ward County
Maps vs. surveys
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.