Blog · October 13, 2026 · Wyoming
Using the Big Horn County GIS Map
A practical guide to the Big Horn County GIS map: the official link, towns and land across the county, property lines, and where deeds are recorded.
Main page: Big Horn County, WY GIS & Parcel Viewer (official map link, Big Horn County facts and neighboring maps).
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Somewhere between Basin and the Big Horn County, MT line is a tract you want to know more about. The Big Horn County GIS map is the free, official place to start.
Keep reading for the viewer link, how to search it, what the parcel data means, and how deeds and plats back it up in Big Horn County.
Big Horn County at a glance: towns and land
Start your bearings with Basin, the county seat, then Burlington, Byron, Cowley, and Deaver. Crossroads communities such as Hyattville, Shell, and Emblem have their own small clusters of lots. Big Horn County was created in 1890 and takes its name from Bighorn Mountains. Census Bureau estimates show 12,018 residents in 2023 and around 3,137 square miles of land in the county. That is only a handful of people per square mile, so most of the Big Horn County map is open country, ranch ground or timber, with parcels that can run to hundreds of acres. On the parcel layer, Bighorn Canyon National Recreation Area and Bighorn National Forest show up as public ground, and the private tracts along their edges are worth checking line by line.
Getting into the Big Horn County parcel viewer
The official map is the Big Horn County parcel viewer. A parcel number from a Big Horn County tax bill is the most precise search; failing that, an owner name or a click on the map near Cowley works. Our Big Horn County listing carries the same link plus neighboring maps.
What the Big Horn County GIS map shows about lot lines
Zoom in far enough on a lot in Basin and you may notice lines crossing driveways or splitting sheds, a normal quirk of tax mapping. Because Wyoming is a section-township-range state, the legal description of a rural tract in Big Horn County reads like a grid reference that you can match to the section lines on the map. A survey is the only document that settles where a Big Horn County boundary actually runs.
Behind the map: land records in Big Horn County
Every line on the Big Horn County map traces back to a recorded deed or plat, and the county's recording office keeps those documents. Which office that is depends on how Wyoming organizes it, so look it up on the Big Horn County government site before you call. For subdivision lots in Greybull, the plat book and page on the record leads straight to the recorded plat.
Who uses the Big Horn County parcel map
Here's who tends to use it in Big Horn County. Deer hunters scouting the woods between Basin and Cowley use the parcel lines to see how many owners share one ridge or creek bottom. Land shoppers looking between Basin and Deaver measure road frontage on the map and check whether a tract is landlocked. If a listing in Cowley says the yard backs up to open land, the map shows who owns that land. An owner in Cowley planning a fence or an outbuilding pulls the parcel first, then the recorded plat.
Private and public hunting ground in Big Horn County
Hunters working the country toward the Johnson County line can use the parcel map to put a name on every woodlot and field. Hunters headed to Bighorn Canyon National Recreation Area and Bighorn National Forest should check where the public boundary ends; the tracts beyond it are private. The Wyoming Game and Fish Department handles licenses, seasons and public-land maps for Big Horn County. Landowners in Big Horn County hear from a lot of hunters; a specific request that names the parcel stands out.
Work and land use in Big Horn County
In the 2022 County Business Patterns data, Big Horn County had 308 establishments; construction, retail trade, and accommodation and food services led the count. What stands out is mining (except oil and gas), food manufacturing, and heavy and civil engineering construction: those sectors make up a much larger slice of local businesses than they do nationally. Ranch and farm tracts around Greybull can carry separate mineral ownership, so read the deed before you price the surface.
A note on timing and acreage
If a tract near Frannie changed hands recently, the recorded deed is more current than the map. Treat Big Horn County acreage figures as estimates until a survey confirms them.
Frequently asked questions
Where do property lines run on a Big Horn County, WY lot?
On rural land near Emblem, the parcel map gives a rough outline, the deed gives the calls, and a Wyoming surveyor finds the corners.
Does the Big Horn County parcel map show where I can hunt?
Use it to find the owner of a woodlot near Deaver, then ask; the map itself grants no hunting rights.
How do I look up a property owner in Big Horn County?
Click the parcel. Big Horn County tax records show the owner of record and usually a mailing address, which may differ from the property address.
Is the Big Horn County, WY parcel map free to use?
Anyone can browse the Big Horn County parcels at no charge, from lots in Deaver to rural tracts near Emblem.
Is there a printed plat book for Big Horn County?
Whether a current printed edition exists for Big Horn County varies; the free online map covering Basin and the rest of the county is the dependable option.
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.