Rattlesnake Mountain Hunter Management Area: hunting, access and rules
Rattlesnake Mountain Hunter Management Area is 15,201 acres in WGFD's Casper Region. Hunter Management Areas are private and leased lands where WGFD arranges hunting access; hunters need a WGFD permission slip for the area. WGFD lists elk (hunt areas 23, 128) for big game hunting here.
Data updated October 2026. Area facts: WGFD's HMA data. Boundary: WGFD GIS. Harvest: WGFD reports to 2025.
BLMState trust landRattlesnake Mountain HMAElk hunt area lineLakeHighway
| Size | 15,201 acres (WGFD) |
|---|---|
| WGFD region | Casper Region |
| Big game listed | Elk |
| Nearest towns | Powder River (24 mi), Jeffrey City (27 mi) and Alcova (27 mi) |
What is Rattlesnake Mountain HMA?
The Rattlesnake-Mountain Hunter Management Area (HMA) is located west of Casper, and is comprised of private and/or leased lands of Clear Creek Cattle Company, and Circle Bar Ranch.
What are the rules on Rattlesnake Mountain HMA?
A permission slip from WGFD is needed to hunt an HMA; WGFD issues them on its website, often by drawing or first come, first served, with limits per hunter. WGFD's page for Rattlesnake Mountain has the current slips and rules.
WGFD's permission slip and its page for Rattlesnake Mountain set the rules for this private and leased ground.
What can you hunt on Rattlesnake Mountain HMA?
WGFD lists the hunt area each big game species is hunted under here: elk in areas 23 and 128. Also listed: mountain lion.
What did hunters take in the hunt areas around Rattlesnake Mountain HMA?
WGFD reports harvest by hunt area, not by access area. The hunt areas that overlap Rattlesnake Mountain HMA, with the acres of the HMA in each and WGFD's latest harvest for the whole hunt area:
| Hunt area | HMA acres in it | Harvest, whole area | Hunter success |
|---|---|---|---|
| Elk Area 23 | 11,769 | 204 (2025) | 42.6% |
| Elk Area 128 | 3,658 | 109 (2025) | 28.5% |
| Deer Area 89 | 11,775 | 92 (2025) | |
| Deer Area 97 | 2,736 | 50 (2025) | |
| Deer Area 90 | 917 | 25 (2025) | |
| Antelope Area 69 | 9,460 | 60 (2025) | 84.5% |
| Antelope Area 68 | 2,758 | 186 (2025) | 86.9% |
| Antelope Area 72 | 2,322 | 823 (2025) | 89% |
| Antelope Area 74 | 888 | 138 (2025) | 95.8% |
Harvest: WGFD harvest reports, latest year each area was reported (WGFD harvest reports). Acres measured by FilledTag from WGFD's boundaries.
What land is around Rattlesnake Mountain HMA?
Inside the HMA boundary, by manager (WGFD's own holdings and leases are not in the federal and state layers, so they show as unlisted land):
| Manager | Acres inside |
|---|---|
| BLM | 615 |
| State trust land | 10 |
| Other land (WGFD-held, leased or private) | 14,802 |
Measured by FilledTag from USGS PAD-US 4.1 (federal land) and the Office of State Lands and Investments (state trust land) inside WGFD's boundary (15,427 acres as drawn).
How do you get to Rattlesnake Mountain HMA?
Highways within 8 miles: WY 136. Nearest towns: Powder River (24 miles), Jeffrey City (27 miles) and Alcova (27 miles).
Questions hunters ask
What can you hunt on Rattlesnake Mountain HMA?
WGFD lists elk for big game, and mountain lion. Each species follows the season of the hunt area the ground is in.
Where is Rattlesnake Mountain HMA?
About 24 miles from Powder River, and 27 miles from Jeffrey City, measured from the area's boundary.
Do you need permission to hunt Rattlesnake Mountain HMA?
Yes. Hunters need a WGFD permission slip for a Hunter Management Area; WGFD's page for Rattlesnake Mountain lists the slips and the area's rules.
Which hunt areas is Rattlesnake Mountain HMA in?
By WGFD's boundaries it lies in elk Areas 23 and 128, deer Areas 89, 97 and 90 and antelope Areas 69, 68 and 72. Each hunt area's season applies to the ground inside it.
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Where these numbers come from
- Area facts, access dates, rules and species: WGFD Hunter Management Area details; WGFD, Rattlesnake Mountain.
- Boundary: WGFD Hunter Management Area boundaries. Surrounding land: USGS PAD-US 4.1 (federal land) and the Office of State Lands and Investments (state trust land).
- Hunt area harvest: WGFD harvest reports, 2021 to 2025.
FilledTag is not part of the Wyoming Game and Fish Department. Numbers are copied from WGFD and the other agencies named, or measured by FilledTag from their maps; nothing on this page is estimated by FilledTag. WGFD's regulations are the final word on every rule.
Wyoming hunting Casper Region Elk Area 23 Elk Area 128 Deer Area 89 Deer Area 97 Deer Area 90 Antelope Area 69