Blog · October 14, 2026 · North Dakota
Vetting Slope County Land for Sale with free records
A little research on a tract near Marmarth goes a long way.
Main page: Slope County, ND GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Looking at a tract outside Little Missouri National Grassland? When you're browsing Slope County land for sale, spend some time with the free parcel map and public records. Covered here for Slope County: spotting open tracts on the map, confirming road access and size, flood and zoning checks, and documents to order before you offer.
Researching Slope County land for sale
Look on the Slope County parcel viewer for parcels with no improvements, useful when you scan the area near Little Missouri National Grassland.
The viewer Slope County publishes
Begin with the Slope County parcel viewer; it maps every assessed parcel from White Lake National Wildlife Refuge to Little Missouri National Grassland. Closer to White Lake National Wildlife Refuge, type a street address, an owner's name or a parcel number, and the matching parcel lights up. If the land is near Marmarth, the parcel card usually lists the owner of record, acreage on the tax roll, the parcel number and sometimes recent sales.
The paper trail behind a parcel
For anything that matters, request the recorded deed from the County Recorder; the parcel line is a drawing of it, and that holds around Amidon too. For a parcel near Little Missouri National Grassland, inherited tracts in the county may sit on many deeds, so a title company earns its fee if money is changing hands.
Who handles what
For assessment questions about property around White Lake National Wildlife Refuge belong with the Director of Tax Equalization, the office behind the parcel record. Zoning, permits and septic questions near White Lake National Wildlife Refuge go to planning, building or health offices, and the answer depends on jurisdiction.
Taking the map into the field
The parcel map usually runs in a mobile browser, handy when you're parked on a road near Amidon, but coverage can be spotty out of town. A saved image of the lot near Amidon and its lines helps when you meet an owner or agent.
Rights that may be separate
In some areas, mineral or timber rights near Marmarth can be sold separately, which a title search can uncover.
A word on accuracy
If the land is near Amidon, listed acreage is an assessed number; only a licensed surveyor can set the real boundary on the ground. In and around Marmarth, owner names and values update on a schedule, so a deed recorded last month can take weeks to appear.
Is the tract reachable?
Make sure there's legal access, not just a path, as lenders near Stewart Lake National Wildlife Refuge may balk at no access.
Flood, wetlands and soils
If you'll need a septic system near Marmarth, ask the health department about soil testing.
Slope County in a few facts
Amidon holds the county offices, where most land records are kept. Other places on the map include Marmarth, Little Missouri National Grassland, Stewart Lake National Wildlife Refuge, and White Lake National Wildlife Refuge. Around 674 people call Slope County home (Census Bureau estimate, 2023) on roughly 1,215 square miles. The county was formed in 1914, and some chains of title near Stewart Lake National Wildlife Refuge are long. Landmarks such as Little Missouri National Grassland help you orient on the aerial around Little Missouri National Grassland.
Next door to this county, at least around Amidon.
The county touches Fallon County, MT, Adams County, Billings County, Bowman County, and Golden Valley County, and each of those keeps its own parcel map, especially near White Lake National Wildlife Refuge. Acreage along the edge near Marmarth can be split across two assessors' files, so look at the neighboring map as well. Out toward Marmarth, the Platbookmapper state page lists every neighboring county map across North Dakota.
On the ground
Walk the land near Marmarth and look for markers, fences and trails, noting road condition, neighbors and noise; the map won't tell you that.
Reading the legal description
North Dakota is laid out under the Public Land Survey System, so rural legal descriptions near White Lake National Wildlife Refuge cite section, township and range. A standard section is about one square mile, roughly 640 acres, with 36 sections to a township, though sections near Amidon can be irregular. Copy the legal description from the record for the parcel near Amidon before you request a deed or survey.
What you can do with it
Agricultural or forestry tax status near Stewart Lake National Wildlife Refuge can change after a sale, taxes may rise when it changes hands.
Frequently asked
Why does listed acreage differ from the deed around Little Missouri National Grassland?
In most cases, a survey for land near Little Missouri National Grassland sets what you're buying; ask for one before closing.
Is the land buildable near Marmarth?
With a lot near Marmarth, buildability depends on access, soils, zoning and floodplain.
Do I need a perc test near Amidon?
Good question; the health department near Stewart Lake National Wildlife Refuge sets septic rules.
How do I find unlisted land around White Lake National Wildlife Refuge?
For acreage around Amidon, the parcel record gives the owner's mailing address; include the parcel ID.
What's a legal description around Marmarth?
For a tract near Amidon, it's the formal description of the land in the deed, and the parcel record often summarizes it.
Open the official Slope County, ND parcel map See it in the Platbookmapper directory
Not a survey. County GIS and tax parcel maps are assessment and planning layers. They are not a substitute for a recorded plat, deed, or licensed survey, especially for fences, setbacks, or boundary disputes.