Blog · October 14, 2026 · Montana
Treasure County Plat Book: finding and using one
For property near Interstate 94, plat books show ownership by township; the parcel viewer shows it today.
Main page: Treasure County, MT GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Hunting for the latest Treasure County plat book? It's a printed atlas of landownership, usually by township, and it's handy for land around Sanders. This Treasure County guide covers: what's in a plat book, where to look for printed copies, and how the county viewer fills the gaps.
The Treasure County plat book: start here
If you're looking near Interstate 94, plat books are commercial atlases, that map ownership across the countryside, page by page across the county.
Where the parcel data lives
On ground around Interstate 94, the public parcel map for this area is the Montana Cadastral, and no login is needed to use it. If the land is near Interstate 94, type a street address, an owner's name or a parcel number, and the matching parcel lights up. For land near Interstate 94, the record panel usually lists the owner of record, assessed acreage, the parcel number and sometimes recent sales.
A homemade atlas
Print parcel views near Interstate 94 township by township to build your own up-to-date atlas.
Using it on a phone
Most viewers work in a phone browser, which helps when you're standing on land near Hysham, though signal can drop in rural spots. A screenshot of the parcel near Interstate 94 with its ID is a good backup.
Next door to Treasure County
Treasure County borders Big Horn County, Rosebud County, and Yellowstone County, all with their own assessor records. A tract near the line by Interstate 94 can be split across two assessors' files, so check the adjacent map before you assume the acreage. In and around Interstate 94, the Platbookmapper state page lists every neighboring county map across Montana.
Finding a printed edition
Older editions near Interstate 94 turn up in libraries and historical societies, which helps when tracing a farm's history.
Who uses plat books
Buyers and seed dealers around Interstate 94 rely on them to see ownership across many tracts at once.
Getting answers from the right desk
If the acreage or value on a parcel near Sanders looks off belong with the Montana Department of Revenue, which maintains the tax roll. Questions about what you can build around Interstate 94 go to planning, building or health offices, depending on whether the land is inside town limits.
Reading the legal description
Montana is laid out under the Public Land Survey System, so rural legal descriptions near Interstate 94 cite section, township and range. A standard section is about one square mile, roughly 640 acres, with 36 sections to a township, though corrections make some sections near Interstate 94 odd-sized. Write down the legal description for the tract near Interstate 94 when you talk to a surveyor.
Getting your bearings
Hysham is the county seat, which is where the courthouse records live. Smaller places on the map include Myers, Sanders, and Interstate 94, where town lots give way to larger tracts. Around 772 people call Treasure County home (Census estimate, 2023) on some 978 square miles. Treasure County dates to 1919, which matters when you trace an old farm's title.
Before you lean on the lines
For land near Interstate 94, acreage on the record is an estimate; just a licensed surveyor establishes the real lines on the ground. Records update in batches, so a recent sale near Interstate 94 may not show yet.
Where the recorded documents are
The map is an index, not the title: recorded deeds, subdivision plats and easements covering ground around Interstate 94 are kept by the County Clerk and Recorder. Closer to Interstate 94, use the document number from the tax record to skip a name search.
Current ownership online
Click a parcel near Interstate 94 for owner and acreage, then print or screenshot it.
Atlas or legal document
Don't confuse the atlas with a recorded subdivision plat: recorded plats near Interstate 94 are filed with the County Clerk and Recorder, and the atlas is just a guide.
Frequently asked
Are old plat books online for land near Interstate 94?
Good question; state archives near Sanders may have copies.
Is there a current Treasure County plat book?
For a tract near Interstate 94, editions come and go; ask local offices.
Why does the plat book differ from the deed near Interstate 94?
Near Interstate 94, plat book acreage and lines are approximate.
Can I use a plat book for a boundary near Interstate 94?
With a lot near Interstate 94, recorded plats are legal documents at the County Clerk and Recorder, and plat books are references.
Can I use the viewer in the field near Interstate 94?
Around Interstate 94, no app is needed for most county viewers; screenshots help offline.
Open the official Treasure County, MT 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.