Idaho Unit 66 Elk Hunting Guide

Idaho Unit 66 sits in the eastern part of the state and offers elk hunters a large, mostly public landscape to work with — 224,194 total acres, 94% of which is public ground. For hunters researching Idaho Unit 66 elk hunting, the unit's combination of accessible terrain, high public land percentage, and Idaho's simple lottery-based application system make it a unit worth a close look, especially for hunters who prioritize opportunity and boots-on-the-ground hunting over a guaranteed shot at a giant bull.

Elevation in the unit ranges from 5,226 feet up to 9,457 feet, giving hunters a wide band of habitat to hunt depending on time of year, weather, and where elk are holding. With zero designated wilderness acreage in the unit, access is generally more straightforward than in many backcountry Idaho units — there's no wilderness-specific travel restriction to plan around, though hunters should still expect rugged, mixed terrain typical of eastern Idaho's elk country. Forum chatter around the unit consistently mentions hunters getting away from roads to find better bulls and lower pressure, which tracks with a unit that draws significant local traffic but still has room to spread out on 224,000-plus acres of public land.

Herd Health & Harvest Trends

Recent harvest data shows a unit that produces solid hunter numbers and a success rate that has been trending upward. In 2025, 4,094 hunters pursued elk in Unit 66 and 849 harvested animals, for a 21% success rate — up from 18% in 2024 (4,542 hunters, 803 harvested) and a notable jump from 15% in 2023, when only 1,543 hunters were in the field and 236 harvested elk.

That three-year trend is worth studying closely. The hunter count nearly tripled between 2023 and 2024, then eased back slightly in 2025, while success rate climbed each year. That pattern suggests a unit that's absorbing more pressure without a corresponding crash in success — a decent sign for herd health and elk availability, though it's also consistent with more hunters simply putting in more effort and covering more ground as the unit's reputation has grown. Hunters should treat the 21% success rate as a unit-wide average across all hunters and hunt types, not a guarantee tied to any particular hunt code or weapon class.

Trophy Quality

Trophy data for the counties overlapping Unit 66 shows a limited history of record-book entries. This doesn't mean big bulls don't exist here — forum posts consistently reference solid bull numbers and hunters willing to hike away from roads to find better animals — but the structured trophy record data available does not support a strong or exceptional trophy designation for this unit. Hunters chasing a true record-class bull should treat Unit 66 as a place where trophy-class animals are possible but rare, rather than a unit with an established pedigree of producing them. The bulk of elk taken here will fall into typical mid-range categories rather than record-book territory, which aligns with what a high-volume, high-public-access unit typically produces.

Access & Terrain

With 94% public land across 224,194 acres and no wilderness acreage to account for, Unit 66 is about as DIY-friendly as it gets in terms of raw access. Hunters aren't fighting private land checkerboarding or wilderness travel restrictions — the limiting factor here is more likely to be hunting pressure on the more obvious, road-accessible terrain.

The elevation range of 5,226 to 9,457 feet means hunters can find everything from lower foothill terrain to high-country basins within the unit boundary. Forum reports describe hunters e-scouting specific drainages and pushing away from roads specifically to avoid pressure, which is a common and effective strategy in a unit this size with this much public access. Given the acreage and elevation spread, hunters willing to gain elevation or hike deeper into less-traveled drainages have real opportunity to separate themselves from the bulk of the hunting pressure that concentrates near easier access points.

Local forum commentary also notes that access to parts of the unit can be affected by snow later in the season, with animals shifting toward neighboring units when conditions turn. Hunters should plan for variable late-season access and have a backup area in mind if snow closes off preferred approach routes.

HuntPilot Analysis: Is Unit 66 Worth Applying For?

Unit 66 is a legitimate consideration for hunters who value opportunity, public access, and a fair, transparent draw process over long-odds pursuit of a record-book bull. The 94% public land figure is exceptional and puts this unit ahead of many others in terms of raw access — hunters aren't fighting for scraps of public ground or navigating complex land ownership patterns.

The harvest trend is the strongest data point in the unit's favor. A climbing success rate over three straight years (15% to 18% to 21%) while hunter numbers grew substantially is a positive signal about elk density and huntability. That said, hunters should go in with realistic trophy expectations — the available trophy record data doesn't support this as a unit known for producing exceptional bulls, so hunters chasing size over opportunity may want to look elsewhere or treat Unit 66 as a numbers-and-experience unit rather than a trophy destination.

For resident Idaho hunters, the low application fee and straightforward lottery format make this an easy unit to apply for every year with essentially no downside — Idaho's system means there's no point-building strategy to worry about, so hunters can simply apply annually and take their shot.

How to Apply

Idaho's application system is refreshingly simple compared to many western states — there is no preference point or bonus point system. Every applicant, resident or nonresident, has an equal chance in the draw each year based purely on lottery odds, regardless of how many years they've applied. Hunters should still check current draw odds for Unit 66 specifically on HuntPilot's Idaho state page (/states/id) before applying, since this article does not include year-specific draw percentages.

That license fee is required in addition to the application and tag fees, so residents should budget for all three costs when applying.

As with residents, nonresidents must hold the qualifying license before submitting their application.

Application dates and fees change every draw cycle. For the current deadlines, fees, and draw odds, see HuntPilot's Idaho page at /states/id.

Frequently Asked Questions

What is the terrain like in Idaho Unit 66? Unit 66 spans a wide elevation range from 5,226 feet to 9,457 feet across 224,194 acres, with 94% of the unit in public ownership and no designated wilderness acreage. This means hunters can expect a mix of lower foothill terrain and higher alpine basins without the added complexity of wilderness travel restrictions. Forum accounts describe hunters e-scouting specific drainages and hiking away from roads to escape pressure, suggesting the terrain rewards hunters willing to put in the miles rather than relying on easy road access.

What is harvest success like in Unit 66? Recent harvest data shows success rates climbing over the past three years — from 15% in 2023 (1,543 hunters, 236 harvested) to 18% in 2024 (4,542 hunters, 803 harvested) to 21% in 2025 (4,094 hunters, 849 harvested). This is a unit-wide average across all hunters and hunt types, but the upward trend alongside growing hunter numbers is a positive indicator for elk availability in the unit.

How big are the elk in Unit 66? Available trophy record data shows a limited history of record-book entries in the counties overlapping this unit. This suggests trophy-class bulls are possible but not common here, and hunters should not expect Unit 66 to be a go-to destination for record-book animals. Most hunters should expect a solid, typical elk hunting experience rather than a trophy hunt.

Is Unit 66 worth applying for? For hunters prioritizing public land access and a fair shot at filling a tag, yes — the 94% public land figure and rising harvest success rate make this a strong opportunity-based unit. For hunters specifically chasing a record-class bull, the limited trophy history suggests looking at units with a stronger documented trophy pedigree. Check HuntPilot's Idaho state page for current draw odds before deciding to apply.

Are there a lot of hunters in Unit 66 during elk season? Hunter numbers have grown significantly, from 1,543 in 2023 to over 4,000 in both 2024 and 2025. Forum posts consistently mention pressure near roads and easy access points, with veteran hunters recommending getting away from roads to find better bulls and fewer other hunters. Given the unit's size and high public land percentage, there is room to spread out for hunters willing to hike into less-traveled terrain.