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Idaho
Unit 66A.
Planning guide for Game Management Unit 66A, with sourced terrain, public-land percentages, published schedules, and links to the connected Pro map.
Boundary Map Locked
Pro includes the interactive GMU map, BLM surface-management context, terrain tools, and current wildfire overlays for Unit 66A.
See Pro pricingTerrainHigh Desert/Basin
OwnershipLand breakdown unavailable
Access DifficultySee IDFG
Key SpeciesBlack Bear
Season TypeGeneral & Controlled
ZoneDiamond Creek
Unit 66A Overview
Idaho Game Management Unit 66A (GMU 66A) is a premier hunting destination located in the Diamond Creek Elk Zone. Home to Black Bear, Deer, Elk, Gray Wolf, Mountain Lion, this unit features open sagebrush steppe, where stalking prowess and early morning glassing are critical. Public-land breakdown for Unit 66A is not yet integrated into our database — verify acreage with Idaho Fish and Game's Hunt Planner before scouting.
2026 Regular Schedule
Official Regulation Feed
Species
Weapon
Tag
Dates
Deer
Any Weapon • Regular Deer Tag
Any Weapon
Regular Deer Tag
Oct 10 - Oct 24
Deer
Archery • Regular Deer Tag
Archery
Regular Deer Tag
Aug 30 - Sep 30
Elk
Archery • A Tag
Archery
A Tag
Aug 30 - Sep 30
Black Bear
Any Weapon • General
Any Weapon
General
Aug 30 - Oct 31
Black Bear
Any Weapon • General
Any Weapon
General
Apr 15 - June 30
Mountain Lion
Any Weapon • General
Any Weapon
General
July 1 - June 30
Gray Wolf
Any Weapon • General
Any Weapon
General
Apr 1 - Nov 14
Gray Wolf
Any Weapon • General
Any Weapon
General
Nov 15 - Mar 31
Gray Wolf
Trapping • General
Trapping
General
Dec 1 - Feb 28
Gray Wolf
Trapping • General
Trapping
General
Apr 1 - Oct 9
Gray Wolf
Trapping • General
Trapping
General
Oct 10 - Mar 31
Prepare for the Hunt
Success in Unit 66A requires understanding the high desert/basin terrain and public land boundaries. Use Roam Idaho for connected trip planning, then carry an official offline map before leaving service.
- GMU Boundary Overlay
- BLM Surface-management Context
- Current Wildfire Overlay
- Slope, Road, and Wind Tools
Common Questions
Where is Unit 66A?
Located in the Diamond Creek Zone with high desert/basin terrain.
Is it public land?
Unit 66A is approximately 80.5% public. See full breakdown below.
Land Ownership
USFS65.71%
Private17.69%
Other12.55%
State1.73%
Tribal1.51%
BLM0.54%
Source: IDFG Hunt Planner · Inside Idaho
Unit 66A Boundary
Those portions of BONNEVILLE and CARIBOU COUNTIES within the following boundary: beginning on McCoy Creek Road (Forest Service Road 087) at the Idaho-Wyoming State line, west on McCoy Creek Road through Herman to Bone-Grays Lake Road, then west on Bone-Grays Lake Road to West Side Road west of Grays Lake, then south on West Side Road to State Highway 34, then east on State Highway 34 to the state line, then north along the state line to the point of beginning.
Diamond Creek Zone Context
Southeastern Idaho — Caribou Range
Diamond Creek covers the Caribou Range east of Soda Springs — high sagebrush parks, aspen pockets, and intermittent timber. Elk populations are moderate and tend to be visible from glassing knobs.
Soda Springs and Afton (Wyoming) are the realistic resupply points. Snow can close upper roads quickly.
See all units in the Diamond Creek ZonePlanning
Primary Region
Upper Snake / Island Park
Nearest Supplies
Hunters typically basecamp or resupply in Idaho Falls, Rexburg, Driggs.
Climate Outlook
Continental climate. Yellowstone-adjacent ecosystem with grizzly presence.
Authorities
Always verify regulations with official government entities before heading into the backcountry.
Explore Diamond Creek Zone Units
Season dates and tag rules sourced from Idaho Fish and Game proclamations. Original IDFG entry for Unit 66A: view source.