Blog · October 14, 2026 · Wyoming
Big Horn County Plat Book (Wyoming)
Township atlases, old editions and current owners in Big Horn County, starting near Burlington.
Main page: Big Horn County, WY GIS & Parcel Viewer (official map link, Big Horn County facts and neighboring maps).
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People who grew up near Basin remember the Big Horn County plat book as the book that named every farm. Here's what a plat book is, where to look for one in Big Horn County, and the free official map that stays current between editions.
What's inside a county plat book
Private publishers compile plat books from county records, so a county edition is a snapshot of who owned land near Basin the year it was printed. It's different from a recorded plat, which is the official survey drawing for a subdivision in Basin filed with the county.
Search Big Horn County parcels by owner, address or ID
For land around Frannie, open the Big Horn County parcel viewer; it's the map Big Horn County itself publishes. Use the search box for an address in Byron or a parcel number, or simply zoom in and click a tract around Frannie. For a backup route to the map covering Frannie, our Big Horn County directory entry keeps the link current.
Where Big Horn County plat books turn up
Try the library in Basin or a local historical society for older Big Horn County editions; libraries sometimes keep past atlases for reference. Older editions are useful for family history around Deaver, showing who held a farm decades ago.
What a plat book page lists near Burlington
A typical atlas page for a township near Burlington lists sections, roads and streams, with each ownership block labeled. Owner names in an older Big Horn County edition may be decades out of date, so confirm on the county map before contacting anyone near Emblem. For a land purchase near Byron, rely on the county parcel record and a title search, not an atlas.
Making your own atlas of Big Horn County
Comparing two Big Horn County editions side by side lists when a farm near Byron was split or sold. Some buyers print the county parcel map at township scale to carry on back roads near Byron.
The Big Horn County economy in brief
Big Horn County's 2022 business count was 308 establishments, with construction, retail trade, and accommodation and food services the largest groups. Mining (except oil and gas) and food manufacturing make up an above-average share of Big Horn County businesses, a clue to how land around Burlington gets used.
From Basin to the back roads
From Basin, the seat of the county, the map spreads out to Burlington, Byron, Cowley, and Deaver. Unincorporated communities in the county, including Hyattville, Shell, and Emblem, show up as small groups of parcels along the roads. Big Horn County had an estimated 12,018 people in 2023 (Census Bureau), spread across about 3,137 square miles. Outside Byron, most of the county map is farm, ranch or timber ground with large, irregular tracts. Big Horn County was organized in 1890, so deeds for older farms near Deaver can run back a long way.
Neighboring maps around Big Horn County
A farm near the county line can carry separate records in Big Horn County, MT, Carbon County, MT, and Johnson County as well. Our Wyoming page links each map neighboring Big Horn County.
Current owners without a printed book
The Big Horn County parcel viewer works as a living Big Horn County plat book, with owner names and parcel lines over aerial photos of Big Horn County. Phone signal can be thin near Emblem, so save the parcel IDs you need before you head out.
Big Horn County, WY: common questions
Is the Big Horn County, Wyoming online map better than a plat book?
For current owners near Basin, yes; the county parcel viewer updates as deeds are processed.
Is there a current plat book for Big Horn County, Wyoming?
It depends on if a publisher has a county edition in print; local offices in Deaver most commonly know.
Does a Big Horn County plat book show property lines?
Only roughly; a Big Horn County plat book is a reference, so a licensed survey decides the real line.
Where can I locate old plat books for Big Horn County, Wyoming?
Some libraries and historical societies keep older Big Horn County atlases; ask what's available near Basin.
What is the difference between a plat book and a plat in Big Horn County?
No; a lot in Deaver answers to its recorded plat, and the county atlas is a reference, nothing more.
Open the official Big Horn County, WY parcel map Big Horn 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.