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Strategic hunting guide for Game Management Unit 21. Real-time fire updates, public land boundaries, and confirmed season dates.

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Unlock Field MapsIdaho 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.
Official Regulation Feed
There are 16 confirmed seasons in Unit 21.
View Full ScheduleSuccess in Unit 21 requires understanding the rugged mountains terrain and public land boundaries. Roam Idaho Members get access to offline maps, allowing you to navigate confidently without cell service.
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
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 ZoneAlways verify regulations with official government entities before heading into the backcountry.
Season dates and tag rules sourced from Idaho Fish and Game proclamations. Original IDFG entry for Unit 21: view source.