This expansive and contiguous shortgrass prairie ranch offers low overhead and the capacity to support over 1,000 cattle year-round. An exceptional property, featuring a convenient location, productive land, and breathtaking scenery, along with robust infrastructure, working facilities, and reliable water sources. The Wild Horse Basin Ranch is enhanced by its state and BLM leases, as well as a unique long-term lease with PacifiCorp and several other private leases on the property. Spanning nearly 93,000 acres, this offering is incredibly rare, especially just 25 miles from the growing city of Casper. Centrally located between the Granite Mountains to the north and the Bighorn Mountains to the south, this ranch has a storied history of cattle ranching. Aesthetic Value The Wild Horse Basin Ranch is an incredibly scenic and diverse property that contains nearly every habitat Wyoming has to offer across its deeded and leased parcels. Conservation Value This property is entirely within core sage grouse habitat, making it an ideal candidate for a conservation easement. Investment Value The Wild Horse Basin Ranch presents a unique opportunity to acquire a large ranch less than 30 minutes from a thriving city. With its substantial acreage and distinctive long-term grazing leases, this property achieves a commendable capitalization rate, maintains low overhead, and offers potential for investment returns and long-term appreciation. 31,892.85 +/- deeded acres and 6,604 acres of Wyoming State leases, 34,946 acres of BLM, 7,840 acres of private leases, and 11,069 acres with a long-term lease with Pacificorp
For sale
$45,000,000
28899 Poison Spider Rd, Casper, WY 82604
5beds
--sqft
Est.:
Farm
Built in 1977
-- sqft lot
$-- Zestimate®
$--/sqft
$-- HOA
What's special
Productive landSubstantial acreageBreathtaking sceneryReliable water sources
- 14 days |
- 511 |
- 15 |
Zillow last checked:
Listing updated:
Listed by:
Jared Souza 307-331-2647,
MIRR Ranch Group
Source: My State MLS,MLS#: 11519927
Tour with a local agent
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 5
- Bathrooms: 3
- Full bathrooms: 2
- 1/2 bathrooms: 1
Basement
- Area: 0
Heating
- Radiant
Features
- Has basement: No
- Has fireplace: No
Interior area
- Total structure area: 0
- Finished area above ground: 0
Video & virtual tour
Property
Features
- Patio & porch: Deck
Details
- Parcel number: 33830510000800
- Lease amount: $0
Construction
Type & style
- Home type: SingleFamily
- Property subtype: Farm
Materials
- Frame
- Roof: Asphalt
Condition
- New construction: No
- Year built: 1977
Utilities & green energy
- Electric: Amps(0)
Community & HOA
HOA
- Has HOA: No
Location
- Region: Casper
Financial & listing details
- Tax assessed value: $10,560
- Annual tax amount: $68
- Date on market: 5/11/2026
- Date available: 05/01/2025
Estimated market value
Not available
Estimated sales range
Not available
$2,254/mo
Price history
| Date | Event | Price |
|---|---|---|
| 5/11/2026 | Listed for sale | $45,000,000 |
Source: My State MLS #11519927 Report a problem | ||
| 5/2/2026 | Listing removed | $45,000,000 |
Source: My State MLS #11519927 Report a problem | ||
| 6/18/2025 | Listed for sale | $45,000,000 |
Source: My State MLS #11519927 Report a problem | ||
Public tax history
| Year | Property taxes | Tax assessment |
|---|---|---|
| 2025 | $68 -1.7% | $1,003 -3.3% |
| 2024 | $69 +2.9% | $1,037 +4.5% |
| 2023 | $67 +10.1% | $992 +10.1% |
| 2022 | $61 -8.1% | $901 -8.1% |
| 2021 | $67 -95.5% | $980 -95.5% |
| 2020 | $1,474 -15.9% | $21,709 -15.9% |
| 2019 | $1,753 +10.9% | $25,815 +10.9% |
| 2018 | $1,580 -0.2% | $23,272 -0.2% |
| 2017 | $1,583 | $23,313 -46.7% |
| 2015 | $1,583 -46.7% | $43,743 +0.1% |
| 2014 | $2,968 | $43,712 |
| 2013 | -- | -- |
| 2012 | -- | -- |
| 2011 | -- | -- |
| 2010 | -- | -- |
| 2009 | -- | -- |
| 2008 | -- | -- |
Find assessor info on the county website
Monthly payment
Est. payment$--/mo
Payment breakdown
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All calculations are estimates and provided by Zillow, Inc. for informational purposes only. Actual amounts may vary.
HOA fees may include property taxes on listings classified as Co-Ops. Contact the listing agent and/or owner for fee details.
Mortgage interest rates are dependent on a number of factors, including credit score, down payment, and repayment length. Interest rate data provided by Zillow Group Marketplace, Inc. as of 1/1/1970 from various mortgage lenders with which we have lead or other similar arrangements; the Estimated Payment is an average of those rates.
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Climate risks
Neighborhood: 82604
Nearby schools
GreatSchools rating
- 5/10Poison Spider Elementary SchoolGrades: K-8Distance: 16.7 mi
- 3/10Natrona County High SchoolGrades: 9-12Distance: 28.7 mi
- 5/10Oregon Trail Elementary SchoolGrades: K-5Distance: 24.4 mi
A local agent can set up tours, give advice and negotiate with sellers.
- Wyoming
- Natrona County
- Alcova
- 82604
- 28899 Poison Spider Rd

