3-D satellite terrain of Unit 81, served by Wayward — the free iPhone GPS app from the people behind Sleeper Units. Drag to turn, scroll or pinch to zoom. Get Wayward and the whole unit rides on your phone, offline.
Edit
Area 81 covers the Star Valley country between the Salt River Range and the Idaho border—a long, narrow agricultural valley flanked by timbered mountain on both sides. Elevations run from about 5,800 feet on the valley floor to over 10,000 feet on the Salt River and Caribou range crests. The valley itself is irrigated hay and pasture along the Salt River and its tributaries, with cottonwood-and-willow river bottoms and a string of small Mormon farming towns running its length—Afton, Thayne, Etna, Alpine. The mountains rise steep on both sides: aspen, lodgepole, Douglas fir, and Engelmann spruce on the lower flanks, climbing into spruce-fir and alpine meadow at the higher elevations. The Salt River Range is the eastern wall; the Caribou-Targhee on the Idaho side forms the western.
Bridger-Teton NF on the Wyoming side, Caribou-Targhee on the Idaho side, and significant private ranch and farm in the valley itself. The HMA and Walk-In programs add access on private. US-89 is the paved spine running the length of the valley. Afton is the supply town—gas, the world's largest elkhorn arch over the main street, real grocery, the Cowboy Donut. Cell service is good in the valley and degrades on the mountains. Elk hunting has a strong private-land dynamic—the elk feed on the agricultural ground and bed in the timber—so access is the central planning question. Mule deer in the foothill aspens.
Unit Stats
Hunting Season Temps (3-yr avg)
Sep
61°
35°
Oct
44°
23°
Nov
29°
9°
Dec
23°
6°
Jan
21°
6°
Feb
21°
5°
Recent Trophy Scores · 2020–2025
Trophy score data is tracked by county, so the overlap with GMU boundaries is approximate. These numbers tell you whether the area is capable of growing big animals — they do not indicate public vs. private land. Big elk can come from anywhere; most elk in the lower 48 trace back to Yellowstone stock that was transplanted west after the species was nearly extirpated in the early 1900s.
County
Species
Method
Count
Avg Score
Top Score
Teton
Elk
Archery
2
310
320
Teton
Elk
Rifle
1
364
364
Teton
Pronghorn
Archery
1
70
70
Edit
Nearest Towns
Afton
Full services: gas, groceries (Broulim's), lodging, medical clinic. Star Valley hub.
Big Piney / Marbleton
Small towns; gas, groceries, lodging. Gateway to Wyoming Range.
LaBarge
Small town; gas, basic supplies. Access to southern Wyoming Range.
Kemmerer
Full services: gas, groceries, lodging, medical clinic. Southern gateway.
Alpine
Small town; gas, lodging, restaurants. Snake River corridor; junction of US-26 and US-89.
Edit
Campgrounds
Swift Creek Campground
USFS (Bridger-Teton NF)
Near Afton; 12 sites; 6,700 ft; Salt River Range access.
Alfred Flat Campground
USFS (Bridger-Teton NF)
Greys River Road; 26 sites; 6,200 ft; popular hunting camp.
Lynx Creek Campground
USFS (Bridger-Teton NF)
Greys River Road; 15 sites; 6,400 ft; good elk country.
Middle Piney Lake Campground
USFS (Bridger-Teton NF)
Near Big Piney; 6 sites; 8,000 ft; trailhead into Wyoming Range.
Sacajawea Campground
USFS (Bridger-Teton NF)
Greys River; 26 sites; 6,400 ft; near forest boundary.
Dispersed camping
USFS (Bridger-Teton NF) / BLM
Widely available along Greys River Road and Wyoming Range forest roads.
Edit
Statewide Outfitters & Directories
These outfitters operate statewide or in multiple regions. Check each one's website to confirm they cover Unit 81.