Blog · October 13, 2026 · Wyoming
Natrona County, Wyoming: GIS Map Guide
The free official GIS map for Natrona County, how to search it, and what the parcel data does and doesn't tell you about owners, acreage and property lines.
Main page: Natrona County, WY GIS & Parcel Viewer (official map link, Natrona County facts and neighboring maps).
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Parcel lines, owner names and acreage for every tract from Mills to Casper are a few clicks away on the Natrona County GIS map, and it costs nothing to use.
Up next are the viewer link, a short tour from Casper to the Converse County line, and the record checks that turn a map click into a firm answer.
How to use the Natrona County GIS map
The Natrona County ArcGIS parcel map is the county's own public parcel viewer; it runs on an Esri ArcGIS web map. Use the search box to find a Natrona County parcel by owner name, address or parcel number, or zoom in and click a lot to open its record. If the official link ever moves, the Natrona County page on Platbookmapper keeps the current version.
Towns, terrain and land across Natrona County
The county seat is Casper; Bar Nunn, Edgerton, Evansville, and Midwest are among the other communities you can zoom to. Don't overlook unincorporated places like Alcova, Antelope Hills, and Bessemer Bend, where rural homesites often come up. The county's land area is about 5,341 square miles, and the Census Bureau estimated 79,941 residents there in 2023. Outside Mills the parcels open up quickly into farms, timber and small acreage homesites. Medicine Bow National Forest and Pathfinder National Wildlife Refuge are a big draw, and the private tracts that border public land are often the first ones hunters and cabin buyers ask about.
Who uses the Natrona County parcel map
Different people come to the Natrona County parcel map for different reasons. For hunters in Natrona County, the map turns a wall of trees into named ownerships, which is the first step toward getting permission. People hunting for a few acres outside Mills use the parcel layer to sort tracts by size and spot ones with good road access. Heirs sorting out family land near Bar Nunn use the record to confirm acreage and the legal description.
Property lines in Natrona County, Wyoming
A Natrona County GIS map is built for assessment, not construction. In Natrona County, as in most places, the lines are a best fit of old deed calls onto modern aerial photos. Legal descriptions in Wyoming usually lean on the section grid, so learning to read 'NE 1/4 of Section 12' pays off quickly around Mills. If a neighbor's fence near Bar Nunn and the map disagree, neither one is proof. A survey is.
Private and public hunting ground in Natrona County
Getting on private ground in Natrona County is about relationships, and those start with the owner name on the parcel record. Around Medicine Bow National Forest and Pathfinder National Wildlife Refuge, private tracts can press right up against the public boundary, so check the lines before you walk in. Licenses and season dates for the Alcova area come from the Wyoming Game and Fish Department. Ask owners near Edgerton early, ask politely, and send a thank-you after the season.
Behind the map: land records in Natrona County
Every line on the Natrona County map traces back to a recorded deed or plat, and the county's recording office keeps those documents. Check the county government website to see which office records deeds for land near Alcova. Rural tracts near Alcova may go back through several deeds; the instrument number on the record is the first link in that chain.
The Natrona County economy in brief
Natrona County had 2,999 business establishments in 2022 (County Business Patterns), led by retail trade, construction, and health care and social assistance. The local economy leans harder than average on support activities for mining and drilling, oil and gas extraction, and pipeline transportation. Buyers looking around Midwest should ask a title company whether minerals were reserved in an earlier deed. Keep that in mind when you compare parcels in Natrona County: who works here shapes what land sells.
Neighboring counties
Looking at land between Evansville and the Carbon County line? Remember that Carbon County, Converse County, Fremont County, Johnson County, and Washakie County each keep separate parcel records. Use the Wyoming county GIS hub to jump between them.
Quick answers
Does the Natrona County parcel map show zoning or flood zones?
Zoning for land near Bar Nunn comes from the local planning office; flood zones are on FEMA's map service if the viewer lacks them.
Can I trust the acreage on the Natrona County map?
It's good for comparing tracts around Mills, but don't pay by the acre based on it alone.
How do I look up a property owner in Natrona County, WY?
Search by address if the lot near Mills has one; otherwise click the tract on the map to see the owner of record.
Does the Natrona County parcel map show where I can hunt?
Use it to find the owner of a woodlot near Bar Nunn, then ask; the map itself grants no hunting rights.
What's the best way to locate a boundary in Natrona County?
For a lot in Bar Nunn, start with the parcel map, then get the recorded plat; a surveyor sets the exact corners.
Open the official Natrona County, WY parcel map Natrona 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.