Blog · October 14, 2026 · Montana
The Gallatin County Plat Book: a Montana guide
What a Gallatin County plat book is, where to track down one around Manhattan, and the free map that covers the gaps.
Main page: Gallatin County, MT GIS & Parcel Viewer (official map link, Gallatin County facts and neighboring maps).
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Old copies of the Gallatin County plat book turn up at auctions and in kitchen drawers around Manhattan, and new ones are harder to track down. We'll cover what's in one, where Gallatin County copies turn up, and how the county's free map fills the gaps.
Plat books vs. recorded plats in Gallatin County
Private publishers compile plat books from county records, so a county edition is a snapshot of who owned land near Bozeman the year it was printed. Deeds and recorded plats, not the atlas, still govern land near Big Sky in the county.
Opening the Gallatin County parcel viewer
For land around Manhattan, open the Gallatin County parcel viewer; it's the map Gallatin County itself publishes. Use the search box for an address in West Yellowstone or a parcel number, or simply zoom in and click a tract around Manhattan. For a backup route to the map covering Manhattan, our Gallatin County directory entry keeps the link current.
Where Gallatin County plat books turn up
Whether a current Gallatin County edition exists varies, so ask locally in Bozeman before ordering; county offices frequently know if one is in print. An old atlas can help trace when a tract around Belgrade split off from a larger farm.
What a plat book page displays near Bozeman
A typical atlas page for a township near Bozeman displays sections, roads and streams, with each ownership block labeled. Owner names in an older Gallatin County edition may be decades out of date, so confirm on the county map before contacting anyone near Big Sky. If you use a plat book for hunting permission near Bozeman, recheck the titleholder on the county map first.
Editions, deeds and printouts
Farm families near Belgrade frequently keep successive editions of the Gallatin County plat book, which together show how ownership shifted over decades. Some buyers print the county parcel map at township scale to carry on back roads near Bozeman.
Work and land use in Gallatin County
In 2022 the Census Bureau tallied 6,692 establishments in Gallatin County; construction topped the list. Leather product manufacturing and fishing, hunting and trapping make up an above-average share of Gallatin County businesses, a clue to how land around Manhattan gets used.
The lay of the land around Bozeman
Bozeman is the county seat, and Belgrade, Three Forks, Manhattan, and West Yellowstone are among the other towns on the county map. Smaller places such as Amsterdam, Big Sky, and Bridger appear on the county map as little clusters of lots. Gallatin County had an estimated 126,409 people in 2023 (Census Bureau), spread across about 2,605 square miles. The Gallatin County map mixes subdivision lots near Belgrade with farm and wooded tracts farther out. With a founding date of 1865, Gallatin County has long chains of title on some rural tracts.
Neighboring maps around Gallatin County
Near the edge of the county, check the next map over: Fremont County, ID, Broadwater County, Jefferson County, Madison County, and Meagher County all border it. Every map bordering Gallatin County is listed on our Montana directory.
Gallatin County land records
For land near Manhattan, the deed itself lives in the county recording office, and the map is an index to it. Easements and access rights near Bozeman live in recorded documents, so read the deed, not just the county map.
Using the Gallatin County map as a modern plat book
Between editions, use the Gallatin County parcel viewer; it displays owners, acreage and parcel IDs for land near Belgrade at no cost. Print a screenshot of the tracts around Bozeman if you want a paper copy in the truck.
Gallatin County plat book questions
Is a plat book the same as a recorded plat for a lot in Bozeman?
No; a lot in Bozeman answers to its recorded plat, and the county atlas is just a reference.
Where can I track down old plat books for Gallatin County, Montana?
Some libraries and historical societies keep older Gallatin County atlases; ask what's available near Belgrade.
Can I use a plat book to track down lot lines near Bozeman?
Only roughly; a Gallatin County plat book is a reference, so a boundary survey decides the real line.
Can I buy a new plat book for Gallatin County, Montana?
Editions come and go; ask at the courthouse, extension office or farm supply stores in Bozeman.
Should I use the Gallatin County, Montana parcel map instead of a plat book?
For current owners near Belgrade, yes; the county parcel viewer updates as deeds are processed.
Open the official Gallatin County, MT parcel map Gallatin County 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.