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Salmon Elk Zone
Idaho GMU 21
Strategic hunting data, boundary maps, and 2026 season dates for Game Management Unit 21.
Updated for 2026 Season
TerrainRugged Mountains
OwnershipLand breakdown unavailable
Access DifficultySee IDFG
Key SpeciesBlack Bear
Season TypeGeneral & Controlled
ZoneSalmon
Unit 21 Overview
Idaho Game Management Unit 21 (GMU 21) is a premier hunting destination located in the Salmon Elk Zone. Home to Black Bear, Deer, Elk, Gray Wolf, Mountain Lion, White-tailed Deer, this unit features high-elevation rugged terrain, requiring physical preparation and optics for cross-canyon spotting. Public-land breakdown for Unit 21 is not yet integrated into our database — verify acreage with Idaho Fish and Game's Hunt Planner before scouting.
Application Strategy
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Maps
Tactics
2026 Regular Schedule
Seasons in Unit 21 typically begin in Oct 10.
There are 16 confirmed seasons in Unit 21.
View Full ScheduleHarvest Data Coming Soon
We're currently digitizing 2023-2025 harvest reports and draw odds for Unit 21. Check back shortly for deep-dive analytics.
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Unit 21 Boundary
That portion of LEMHI COUNTY within the following boundary: beginning at the Idaho-Montana State line on U.S. 93, then west along the state line to the Idaho-Lemhi County line, then southwest along the Idaho-Lemhi County line to the Salmon River, o.gov
Salmon Zone Context
East-Central Idaho — Salmon River Country
The Salmon zone covers the high-elevation drainages east of the Salmon River, with broad alpine basins, sage-and-fir mosaic terrain, and good migration corridors connecting summer and winter range. It's a balance of remote feel and reasonable access — a frequent first choice for non-wilderness DIY hunters.
Salmon, Challis, and Mackay are the staging towns. Snow can close upper roads any time after mid-October.
See all units in the Salmon ZoneCommon Questions About Unit 21
Where is Idaho GMU 21?
Unit 21 sits in the Salmon Elk Zone. The landscape is predominantly rugged mountains, requiring appropriate gear and preparation.
What species can I hunt in Unit 21?
Unit 21 has open seasons for Deer, White-tailed Deer, Elk, Black Bear, Mountain Lion. Confirm season dates and weapon legality with Idaho Fish and Game before applying or buying tags.
Are offline maps useful in GMU 21?
Yes. Cell service is often limited or non-existent in the core hunting areas of Unit 21. Having saved offline maps is critical for safety and staying on legal ground.
Is Unit 21 mostly public land?
Unit 21 is approximately 98.7% public (mostly public). That gives DIY hunters meaningful range for scouting and stalking without trespass risk.
Other Units in the Salmon Zone
Season and regulatory information sourced from Idaho Fish and Game proclamations. Land ownership data compiled from public records. Maps generated by Roam Idaho.
Terrain Breakdown
Key Insight
Predominantly Rugged Mountains
Prepare for steep elevation and spot-and-stalk tactics.
See terrain map
Land Access
Access Intel
Mostly Public
Great for DIY roaming.
Land Ownership Map
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Species Guides
Hunted in Unit 21. Tap a species for full strategy.
Pro Tip
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