Idaho Elk Mule Deer

Unit 21A (Salmon Zone)

Idaho Hunting Guide — Elk, Mule Deer

Unit 21A lies in Lemhi County and covers about 248 square miles. Named ground inside it runs from 3,642 to 10,229 feet. Idaho Fish and Game's harvest estimates put elk success here as high as 34%. Federal land covers about 89% of it. Check land status on a current map before you plan a route.

View Draw Odds Idaho Hunting Guide

🏔️

89%

Public Land

⛰️

3,855–9,531 ft

Sampled elevation

Build your own PDF hunt guide for Unit 21A

Answer a few questions about your tag, your season and your rig, and the Field Intelligence Report builds a print-ready Idaho Unit 21A guide around your hunt: three ranked spots with morning, afternoon and evening plays, a day-by-day plan, topo maps with every pin numbered, a camp and access plan, the legal and retrieval rules for this unit, shot discipline, a meat-care and pack-out plan, and a pre-trip checklist. Every coordinate sits on land recorded as public.

Elk guide Mule Deer guide

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Elk Hunting in Unit 21A

Where to Find Elk in Unit 21A

Idaho Fish and Game draws an exact line around unit 21A and says nothing about where the elk stand inside it. Every place named below sits inside the unit line. Which of them holds animals in your season is for you to find out. The unit lies in Lemhi County. It runs to about 248 square miles.

How Idaho Fish and Game sets up elk hunting in unit 21A

Idaho Fish and Game runs its general elk seasons by elk management zone rather than unit by unit, and puts unit 21A in the Salmon Zone, so the zone's tag rules are the ones that apply here.

The lines of the unit: Salmon River and Carmen Creek

Idaho Fish and Game describes unit 21A as that portion of Lemhi County within the drainage of the east side of the Salmon River downstream from and including the Carmen Creek drainage to the town of North Fork, and that portion of the North Fork of the Salmon River drainage east of U.S. 93 between the town of North Fork and the Idaho-Montana State line. Read it as a frame, not as a hint about animals. What it does give you is the way in: the rivers and highways you cross, and the divides that decide which drainage you end up in.

High ground inside the line: Freeman Peak, Copperhead Peak and Ajax Peak

Named high points inside the unit include Freeman Peak at 10,229 feet, Copperhead Peak at 10,037 feet, Ajax Peak at 9,970 feet, Sheep Mountain at 9,850 feet and N Mountain at 8,847 feet. Several carry a public-land flag in our data, which makes them the first places to try for a view. Elk want timber to bed in and open ground to feed on, within a short walk of each other.

Holding ground: Thompson Gulch, Golway Gulch and Elkhorn Gulch

Below them sit Thompson Gulch at 5,053 feet, Golway Gulch at 5,036 feet, Elkhorn Gulch at 4,920 feet, Cruiser Gulch at 4,797 feet and Chinese Gulch at 4,776 feet. These are the folds worth watching, and the ones other hunters walk past on the way to somewhere steeper. Work out which of them you can see from one position before you pick a camp.

Water in this unit

The water inside the unit line comes to 20 mapped stream reaches, 4 lakes and 1 stock tanks. Nothing in the data says which of them run in autumn, so a scouting trip earns its fuel.

Reading the land status

Our ownership read for this unit is approximate — it comes out as National Forest 60%, Private / Other 32% and State Trust 8%, so treat it as a starting point and check a current land-status layer before you plan a route. Named ground inside unit 21A runs from 3,642 feet to 10,229 feet — more than 4,000 feet between the named features alone, so the season you draw decides which part of it you hunt.

Unit 21A terrain and land status

Measured from the unit boundary, not from the agency write-up

The lay of it

3,855–9,531 ft on a terrain sample , averaging 6,311 ft ; peaks can run higher. That spread means you can hunt two seasons in one day — plan clothing for both ends.
248.2 sq mi inside the boundary.

Who owns the ground

National Forest — 60%
State Trust — 8%
Private / Other — 32%

Roughly 68% is public. Carry a land-status layer anyway — these are area percentages, not a map of where the boundaries fall.

Water on the ground

1 tanks
20 stream segments
4 lakes

Counts from mapping data, so this is how many exist, not how many hold water in a dry year. Sitting water only pays where you find fresh tracks.

Named features inside the unit

Glass from: Freeman Peak (10,229 ft), Copperhead Peak (10,037 ft), Ajax Peak (9,970 ft), N Mountain (8,847 ft)

Holding ground: Big Hole Pass (7,050 ft), Bradley Gulch (5,869 ft), Cool Gulch (5,482 ft)

Every one of these was tested against the unit polygon before it went on the map. They are starting points, not agency recommendations.

How to Hunt Elk in Unit 21A

Idaho Fish and Game's own harvest estimates put elk success in unit 21A at 34% across all manners of take. That is an ordinary spread for this country, and it rewards whoever scouted. The plan: find the feed, find the timber it backs onto, then watch the seam between them at the edges of the day.

The 2026 controlled hunts in unit 21A

Idaho Fish and Game's 2026 rules list one controlled hunt for elk on unit 21A under its own number.

Hunt 2059 — antlerless elk, 75 tags, Nov 15–Dec 15

Dates and tag numbers are IDFG's as printed for that season, and IDFG changes hunt areas between years, so check the current booklet before you apply.

Applying for a unit 21A tag

Idaho Fish and Game's first application period for deer, elk and pronghorn runs May 1 to June 5, with results in early July, and a second period runs August 5 to 15 for what is left. A hunter drawn for a limited antlered-only elk hunt sits out the next year's first period for that kind of hunt; unlimited and extra hunts are exempt. Two to four hunters may apply together for the same hunt. Idaho's draw is random, with no preference or bonus points to build.

Glassing from Eagle Mountain, Anderson Mountain and Freeman Peak

Take a position on one of Eagle Mountain (8,252 ft), Anderson Mountain (8,038 ft), Freeman Peak (10,229 ft) and Copperhead Peak (10,037 ft) and be on it before light. In the dark the air runs downhill. Pick an approach that doesn't send it into the country you want to see, and plan to move once the slope warms. Work the glass in strips and go back over ground you already covered — animals appear in country you looked at ten minutes ago. On the rut hunts, September bugling works where you can get above a drainage and let the thermals carry sound downhill.

Water against feed

There are 20 mapped stream reaches and 1 tanks inside the unit, so water is rarely the limiting factor. Where water is everywhere, feed is what concentrates animals, so hunt the feed and treat water as a convenience. A tank with no tracks is a tank with no reason to sit on it.

Timing the season: Sep, Oct, Nov

Season normals here run Sep 70/35°F, Oct 55/27°F and Nov 38/17°F. By Nov the lows are around 17°F, and the first hard storm after that moves animals off the high ground — a late tag is a bet on that storm arriving. Precipitation runs about 1 in. in Sep, 0.9 in. in Oct and 0.8 in. in Nov, and the graded gravel in this unit turns greasy wet.

Getting past the roads: US 93 and Lewis and Clark Jeep Trail

US 93 and MT 43 are the paved frame, which is also where everyone else starts. National Forest Development Road 138 needs clearance, and that is usually where the boot tracks thin out. There is little true four-wheel-drive road here, so distance from the gravel is the only thing separating you from the next hunter.

What we can't tell you

Some of the ground named above carries no land-status flag we trust, so check ownership on a current layer before you hunt it.

Getting in and staying out: unit 21A

Named routes and what they need

US 93 — 17.8 mi · Paved (all rigs)
Lewis and Clark Jeep Trail — 6.6 mi · Graded gravel (2WD / small trailer)
National Forest Development Road 138 — 2.7 mi · High-clearance
Carl Gulch Trail — 2.2 mi · Graded gravel (2WD / small trailer)
Sheep Creek Road — 1.2 mi · Graded gravel (2WD / small trailer)
MT 43 — 1 mi · Paved (all rigs)

Ratings come from road data, not from a drive this season. Check current conditions with the managing office before you commit a trailer.

Nearest services

West Salmon — 17.2 mi · fuel, groceries
Salmon — 17.5 mi · fuel, groceries
East Salmon — 18 mi · fuel, groceries
Jackson — 22.2 mi · no services listed
Wisdom — 23.7 mi · no services listed

Developed camps

Tower Rock Campground · reservable
Morgan Bar Campground
Bobcat Gulch Campground
Fourth of July Creek Campground
Wagonhammer RV Park

Season weather and signal

Jan28° / 8° · 0.6" precip
Aug80° / 42° · 0.7" precip
Sep70° / 35° · 1" precip
Oct55° / 27° · 0.9" precip
Nov38° / 17° · 0.8" precip
Dec27° / 9° · 0.7" precip

Best signal is Verizon at about 21% of the unit. Plan on being out of contact and tell someone your route.

Idaho rules that decide your day

Summarised from IDFG regulations. They change — read the current regulations and your permit-tag before you hunt.

Legal shooting hours

Big game may be taken from half an hour before sunrise to half an hour after sunset.

Motorized retrieval

Idaho has no general off-road retrieval allowance on federal ground; stay on designated routes.

Tagging

Validate the tag by cutting out the month and day, and attach it to the carcass before moving it.

Leaving meat

Wasting edible meat is illegal.

Where you may not shoot

Occupied structures — No shooting from or across a public highway, and no shooting toward an occupied dwelling.

Elk: where to put the shot

Broadside or quartering away, on the back edge of the front leg about a third of the way up the body. That is lungs, and on a quartering-away angle it picks up the far shoulder.

Shots to refuse

No straight-on and no straight-away shots. An elk's chest is deep and the margin is small.
Nothing standing behind or overlapping the animal you picked. A pass-through kills the elk behind it too.
Your maximum range is the farthest you have put three shots in a paper plate off the sticks you are actually carrying. Not the farthest you have ever hit anything.
Scope on 3–4x. A herd fills a 12x field of view and you lose the animal you picked.

Identification:On an antlerless tag, legal means no antler of any kind through the skin. A spike looks exactly like a cow until it turns its head. If you can't see the head, don't shoot.

Plan the carry: roughly 150– 220 lb of boned-out meat, before head and hide — two to four large coolers, plus bagged ice from town. ProHunt planning estimate, not an agency figure.

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Elk Success Rates

Rifle34%

Archery21%

Idaho Fish and Game's 2025 harvest estimates put elk success in unit 21A at 34% — 162 animals taken by 482 hunters. The hunter count is large enough for the percentage to mean something and small enough that a good or bad year still moves it.

These are the agency's own printed figures for this unit, not a modelled estimate and not a state average. They describe one season, so check Idaho Fish and Game's current harvest estimates before you read a trend into them.

Elk Draw Odds

Season	Tags	Applicants	Draw %	Pts (n/p)
Controlled — 1st Drawing either sex (resident)	68	154	44.0%	—
Controlled — 1st Drawing either sex (nonresident)	7	14	50.0%	—
Controlled — 2nd Drawing either sex (resident)	7	72	10.0%	—
Controlled — 2nd Drawing either sex (nonresident)	0	3	0.0%	—

Data from 2025 draw results. Each row is one residency pool — read the label before the number. This agency publishes no point thresholds, so the Pts column stays blank and these are pool odds, not what a point total draws.

Open in Draw Odds Engine

Idaho Fish and Game's 2025 first drawing for elk in unit 21A, with residents and nonresidents kept apart because they draw from different tag pools:

Hunt 2059 — residents 154 applicants for 68 tags, 44% drawn; nonresidents 14 applicants for 7 tags, 50% drawn

Idaho draws at random with no point system, so these are what that year happened to look like, not a requirement to build toward. Idaho Fish and Game reuses hunt numbers for different areas between years, so the figures are matched on the area each hunt had in 2025. Checked against Idaho Fish and Game's hunt planner draw results on 2026-06-09.

Mule Deer Hunting in Unit 21A

Unit 21A lies in Lemhi County and covers about 248 square miles. Named ground inside it runs from 3,642 to 10,229 feet. Idaho Fish and Game's harvest estimates put deer success here as high as 37%. Federal land covers about 89% of it. Check land status on a current map before you plan a route.

Where to Find Mule Deer in Unit 21A

What Idaho Fish and Game publishes for unit 21A is a boundary, not a mule deer map. Every place named below sits inside the unit line. Which of them holds animals in your season is for you to find out. The unit lies in Lemhi County. It runs to about 248 square miles.

How Idaho Fish and Game sets up mule deer hunting in unit 21A

Idaho Fish and Game keeps a general deer season page for unit 21A, and that page is where this year's dates and weapon rules live.

The lines of the unit: Salmon River and Carmen Creek

Idaho Fish and Game describes unit 21A as that portion of Lemhi County within the drainage of the east side of the Salmon River downstream from and including the Carmen Creek drainage to the town of North Fork, and that portion of the North Fork of the Salmon River drainage east of U.S. 93 between the town of North Fork and the Idaho-Montana State line. It tells you the shape of the unit and nothing about its inhabitants. Its value is practical — those are the features you will navigate by, and the ridges that separate one day's country from another's.

High ground inside the line: Bitterroot Mountain, Stein Mountain and Morgan Mountain

Named high points inside the unit include Bitterroot Mountain at 8,568 feet, Stein Mountain at 8,552 feet, Morgan Mountain at 8,262 feet, Eagle Mountain at 8,252 feet and Anderson Mountain at 8,038 feet. Several carry a public-land flag in our data, which makes them the first places to try for a view. Mule deer bed on broken ground with a view and feed on the brush below it.

Holding ground: Keystone Gulch, Powder Gulch and Davis Canyon

Below them sit Keystone Gulch at 4,625 feet, Powder Gulch at 4,587 feet, Davis Canyon at 4,561 feet, Gold Star Gulch at 4,450 feet and Cyanide Gulch at 4,431 feet. Those are the basins, parks and bottoms this unit has, and they are what you glass into from above. Reaching the edge of one before light beats reaching its middle at noon.

Water in this unit

The water inside the unit line comes to 20 mapped stream reaches, 4 lakes and 1 stock tanks. Nothing in the data says which of them run in autumn, so a scouting trip earns its fuel.

Reading the land status

Unit 21A terrain and land status

Measured from the unit boundary, not from the agency write-up

The lay of it

3,855–9,531 ft on a terrain sample , averaging 6,311 ft ; peaks can run higher. That spread means you can hunt two seasons in one day — plan clothing for both ends.
248.2 sq mi inside the boundary.

Who owns the ground

National Forest — 60%
State Trust — 8%
Private / Other — 32%

Roughly 68% is public. Carry a land-status layer anyway — these are area percentages, not a map of where the boundaries fall.

Water on the ground

1 tanks
20 stream segments
4 lakes

Counts from mapping data, so this is how many exist, not how many hold water in a dry year. Sitting water only pays where you find fresh tracks.

Named features inside the unit

Glass from: Freeman Peak (10,229 ft), Copperhead Peak (10,037 ft), Ajax Peak (9,970 ft), N Mountain (8,847 ft)

Holding ground: Big Hole Pass (7,050 ft), Bradley Gulch (5,869 ft), Cool Gulch (5,482 ft)

Every one of these was tested against the unit polygon before it went on the map. They are starting points, not agency recommendations.

How to Hunt Mule Deer in Unit 21A

Idaho Fish and Game's own harvest estimates put deer success in unit 21A at 37% across all manners of take. That is an ordinary spread for this country, and it rewards whoever scouted. The plan: glass the broken edges at first light, then sit still and keep glassing the same ground.

The 2026 controlled hunts in unit 21A

Idaho Fish and Game's 2026 rules list 2 controlled hunts for mule deer on unit 21A under its own number.

Hunt 1083 — muzzleloader only deer, 5 tags, Nov 1–Nov 30. Antlered only
Hunt 1158 — outfitter allocation deer, antlered deer only, 1 tag, Nov 1–Nov 30. Muzzleloader only

Dates and tag numbers are IDFG's as printed for that season, and IDFG changes hunt areas between years, so check the current booklet before you apply.

Applying for a unit 21A tag

Idaho Fish and Game's first application period for deer, elk and pronghorn runs May 1 to June 5, with results in early July, and a second period runs August 5 to 15 for what is left. A hunter drawn for a limited antlered-only deer hunt sits out the next year's first period for that kind of hunt; unlimited and extra hunts are exempt. Two to four hunters may apply together for the same hunt. Idaho's draw is random, with no preference or bonus points to build.

Glassing from Ajax Peak, Sheep Mountain and N Mountain

Take a position on one of Ajax Peak (9,970 ft), Sheep Mountain (9,850 ft), N Mountain (8,847 ft) and Bitterroot Mountain (8,568 ft) and be on it before light. In the dark the air runs downhill. Pick an approach that doesn't send it into the country you want to see, and plan to move once the slope warms. Give a basin forty minutes before you decide it is empty. On the rut hunts, late-season hunts put bucks with doe groups and moving in daylight.

Water against feed

There are 20 mapped stream reaches and 1 tanks inside the unit, so water is rarely the limiting factor. Where water is everywhere, feed is what concentrates animals, so hunt the feed and treat water as a convenience. Sitting water works where you can see fresh tracks going in, and nowhere else.

Timing the season: Sep, Oct, Nov

Getting past the roads: US 93 and Lewis and Clark Jeep Trail

What we can't tell you

Some of the ground named above carries no land-status flag we trust, so check ownership on a current layer before you hunt it.

Getting in and staying out: unit 21A

Named routes and what they need

US 93 — 17.8 mi · Paved (all rigs)
Lewis and Clark Jeep Trail — 6.6 mi · Graded gravel (2WD / small trailer)
National Forest Development Road 138 — 2.7 mi · High-clearance
Carl Gulch Trail — 2.2 mi · Graded gravel (2WD / small trailer)
Sheep Creek Road — 1.2 mi · Graded gravel (2WD / small trailer)
MT 43 — 1 mi · Paved (all rigs)

Ratings come from road data, not from a drive this season. Check current conditions with the managing office before you commit a trailer.

Nearest services

West Salmon — 17.2 mi · fuel, groceries
Salmon — 17.5 mi · fuel, groceries
East Salmon — 18 mi · fuel, groceries
Jackson — 22.2 mi · no services listed
Wisdom — 23.7 mi · no services listed

Developed camps

Tower Rock Campground · reservable
Morgan Bar Campground
Bobcat Gulch Campground
Fourth of July Creek Campground
Wagonhammer RV Park

Season weather and signal

Jan28° / 8° · 0.6" precip
Aug80° / 42° · 0.7" precip
Sep70° / 35° · 1" precip
Oct55° / 27° · 0.9" precip
Nov38° / 17° · 0.8" precip
Dec27° / 9° · 0.7" precip

Best signal is Verizon at about 21% of the unit. Plan on being out of contact and tell someone your route.

Idaho rules that decide your day

Summarised from IDFG regulations. They change — read the current regulations and your permit-tag before you hunt.

Legal shooting hours

Big game may be taken from half an hour before sunrise to half an hour after sunset.

Motorized retrieval

Idaho has no general off-road retrieval allowance on federal ground; stay on designated routes.

Tagging

Validate the tag by cutting out the month and day, and attach it to the carcass before moving it.

Leaving meat

Wasting edible meat is illegal.

Where you may not shoot

Occupied structures — No shooting from or across a public highway, and no shooting toward an occupied dwelling.

Mule Deer: where to put the shot

Broadside or quartering away, on the back edge of the front leg about a third of the way up the body.

Shots to refuse

Nothing behind or overlapping the animal you picked.
Your maximum range is the farthest you have shot a three-shot group into a paper plate from the rest you are carrying.
Pass the shot you are talking yourself into.

Plan the carry: roughly 40– 120 lb of boned-out meat, before head and hide — two large coolers. ProHunt planning estimate, not an agency figure.

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Mule Deer Success Rates

Idaho Fish and Game's 2025 harvest estimates put deer success in unit 21A at 37% — 198 animals taken by 539 hunters. The hunter count is large enough for the percentage to mean something and small enough that a good or bad year still moves it. The figure is IDFG's result for deer in the unit, not for mule deer alone.

Mule Deer Draw Odds

Season	Tags	Applicants	Draw %	Pts (n/p)
Controlled — 1st Drawing either sex (resident)	4	82	5.0%	—
Controlled — 1st Drawing either sex (nonresident)	1	17	6.0%	—

Open in Draw Odds Engine

Idaho Fish and Game's 2025 first drawing for mule deer in unit 21A, with residents and nonresidents kept apart because they draw from different tag pools:

Hunt 1083 — residents 82 applicants for 4 tags, 5% drawn; nonresidents 17 applicants for 1 tag, 6% drawn

Unit Logistics & Expectations

Planning Notes

⛺

Camp Sites

5 developed campgrounds in or beside the unit, including Tower Rock Campground, Morgan Bar Campground and Bobcat Gulch Campground.

🛣️

Road Conditions

US 93, Lewis and Clark Jeep Trail and National Forest Development Road 138 are the named routes in the unit. Roughly 19 mi paved, 10 mi gravel and 0 mi four-wheel-drive.

🥾

Terrain Difficulty

Named features from 3,642 to 10,229 ft. More than 4,000 feet between the named features alone, so plan the pack-out before the shot.

👥

Hunting Pressure

Our land-status read for this unit is approximate, so treat any pressure estimate from it with suspicion and check a current ownership layer.

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Weather

Season normals: Sep 70/35°F, 1 in.; Oct 55/27°F, 0.9 in.; Nov 38/17°F, 0.8 in..

📱

Cell Service

Verizon 21%, AT&T 14%, T-Mobile 7% of the unit area — modelled coverage, not measured. Assume no signal off the paved road.

🏘️

Nearest Town

West Salmon (17 mi), Salmon (18 mi), East Salmon (18 mi)

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Frequently Asked Questions

Where is Idaho unit 21A?

Unit 21A lies in Lemhi County. Idaho Fish and Game describes unit 21A as that portion of Lemhi County within the drainage of the east side of the Salmon River downstream from and including the Carmen Creek drainage to the town of North Fork, and that portion of the North Fork of the Salmon River drainage east of U.S. 93 between the town of North Fork and the Idaho-Montana State line. It covers about 248 square miles.

What is the elk success rate in unit 21A?

Idaho Fish and Game's 2025 harvest estimates put elk success in unit 21A at 34% across all manners of take. Those are the agency's own figures for this unit, not a statewide average.

Where do you stay and resupply for a unit 21A hunt?

The nearest services our logistics pipeline finds for unit 21A are at West Salmon, about 17 miles from the unit's centre, with Salmon at about 18 miles. There are also 5 developed campgrounds in or beside the unit.

What is the mule deer success rate in unit 21A?

Idaho Fish and Game's 2025 harvest estimates put deer success in unit 21A at 37% across all manners of take. Those are the agency's own figures for this unit, not a statewide average.

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Sources & Verification

Every fact on this page is tied to a primary source below. Last fact-checked 2026-10-24.

Idaho Big Game 2026 Seasons & Rules — Idaho Department of Fish and Game · supports: Game management unit boundary description, Counties the unit lies in, Controlled hunt numbers, tags and season dates · accessed 2026-10-24
IDFG Salmon Zone elk tag limits — Idaho Department of Fish and Game · supports: Season structure for the unit · accessed 2026-10-24
IDFG Hunt Planner — 2025 general hunt harvest statistics — Idaho Department of Fish and Game · supports: Harvest, hunters and percent success for elk in unit 21A · accessed 2026-10-19
IDFG Hunt Planner — controlled hunt drawing odds — Idaho Department of Fish and Game · supports: Applicants, tags and percent drawn by hunt, year and residency · accessed 2026-06-09
IDFG GameManagementUnits and ControlledHunts_All feature services — game management units and every species' controlled-hunt areas — Idaho Department of Fish and Game · supports: Mapped extent of the unit or hunt area, Which named ground falls inside its line · accessed 2026-10-24
IDFG general deer season page for unit 21A — Idaho Department of Fish and Game · supports: Season structure for the unit · accessed 2026-10-24