Blog · October 14, 2026 · Montana
Valley County Plat Book, Montana: what to know
Closer to Opheim, plat books show ownership by township; the parcel viewer shows it today.
Main page: Valley County, MT GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Hunting for the latest Valley County plat book? It's a printed atlas of landownership, usually by township, useful for farms near Opheim. In this Valley County guide: what's in a plat book, where to find editions, and how the county viewer fills the gaps.
The Valley County plat book: start here
For property near Glentana, a plat book is a privately published atlas, with owner names on each tract, often organized by township.
The free map to start with
Your first stop is the Valley County ArcGIS parcel map; it includes every tax parcel from Larslan to Glasgow. With a lot near Fort Peck, put in a street address, an owner's name or a parcel number, and the matching parcel lights up. For a tract near Glasgow, the parcel card normally shows the owner of record, acreage on the tax roll, the parcel number and sometimes recent sales.
Printing your own
Screenshot each section of the viewer around Glentana and keep them in a binder for the truck.
Land on the county line
The county meets Daniels County, Garfield County, McCone County, Phillips County, and Roosevelt County; every one of them runs a separate parcel map, at least around St. Marie. Ground near Nashua that runs to the line may be split in two county records, so open the adjacent map before you assume the acreage. Closer to Fort Peck, our state page lists each bordering county map across Montana.
Finding a printed edition
Older editions near Frazer turn up in libraries and historical societies, which helps when tracing a farm's history.
Sections, lots and bearings
Montana follows the Public Land Survey System, so rural legal descriptions near St. Marie cite section, township and range. Each section is nominally a mile square, about 640 acres, with 36 sections to a township, though real sections near Hinsdale vary in size. Write down the legal description for the tract near Hinsdale before you request a deed or survey.
What the map can't tell you
If the land is near Opheim, listed acreage is an estimate; only a licensed surveyor sets the real lines on the ground. For a home near Glasgow, owner names and values update on a schedule, so a deed recorded last month can take weeks to appear.
Which office to call
Recorded documents for a parcel near Opheim are with the County Clerk and Recorder, often with an online index. Zoning, permits and septic questions near Glentana need the planning or permitting office, town or county, depending on location.
Common uses
Buyers and seed dealers around Larslan rely on them to see ownership across many tracts at once.
Backing up the map with records
For anything that matters, pull the recorded deed through the County Clerk and Recorder; the parcel line is a drawing of it, for land near Glasgow included. Older tracts around Fort Peck may trace back through several deeds, so a title company can sort it out before a purchase.
A quick look at the area
Glasgow is the county seat, which is where the courthouse records live. Other places on the map include Fort Peck, Nashua, Opheim, and Frazer, each with its own cluster of lots. About 7,474 people live in Valley County (Census estimate, 2023) on about 4,926 square miles. Valley County was formed in 1893, which matters when you trace an old farm's title.
On site with the map
Most viewers work in a phone browser, which helps when you're standing on land near Glasgow, though signal can drop in rural spots. A printout of the tract near Hinsdale is a good backup.
Using the parcel viewer instead
For current names, use the Valley County ArcGIS parcel map, including rural land around Opheim.
Atlas or legal document
For a tract near Glentana, a plat book is not a recorded plat: the recorded plat at the County Clerk and Recorder is a legal document, and the atlas is just a guide.
Quick answers
Are old plat books online near Nashua?
Short answer: state archives near Glentana may have copies; call ahead.
Is the online parcel map better than a plat book for land near Nashua?
For current owners, the viewer is usually better; a printed atlas is still handy offline, and that holds around Larslan too.
Why does the plat book differ from the deed around Larslan?
In and around Glasgow, the deed and a survey decide.
Is a plat book the same as a recorded plat for land near Opheim?
Closer to St. Marie, a survey sets boundaries, not an atlas.
How do I save a parcel from the viewer in Valley County?
In and around Fort Peck, most viewers have a print or export tool; downloads of raw data vary by county.
Open the official Valley 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.