Idaho Unit 42 Mule Deer Hunting Guide

Idaho Unit 42 sits in the south-central part of the state, spanning 859,257 acres of public ground with elevations ranging from 4,193 to 6,807 feet. For hunters researching deer opportunity in this part of Idaho, Unit 42 stands out for one simple reason: it is entirely public land, with 100% of the unit open to hunters willing to put in the legwork. That kind of access is increasingly rare in western big game country, and it makes Unit 42 worth a close look for any deer hunter building an Idaho application strategy.

This is a unit defined by mid-elevation terrain rather than high alpine basins — the elevation band tops out under 6,900 feet, which typically translates to a mix of foothill country, brushy draws, and timbered ridgelines rather than extreme high-country wilderness. With zero designated wilderness acreage, hunters can expect road-accessible and pack-in terrain without the additional logistical complications that wilderness boundaries bring in other units. According to HuntPilot's unit data, Unit 42 has produced measurable harvest activity across the last several seasons, giving hunters a real baseline to plan around rather than guessing.

HuntPilot Analysis: Is Unit 42 Worth Applying For?

Unit 42 offers a straightforward value proposition: 100% public land access combined with a consistent, if modest, harvest track record. For hunters who prioritize public access above all else, this unit removes the private-land access headache that plagues so much of the West. There's no need to negotiate landowner permission or worry about parcel boundaries — the entire unit is open ground.

That said, the harvest numbers tell a story of a unit that produces opportunity but not guaranteed success. Success rates over the last four seasons have ranged from 17% to 24%, meaning the majority of hunters who draw or purchase a tag for Unit 42 go home without a deer. This is typical for many public-land, general-access deer units in Idaho and shouldn't be viewed as a red flag — it simply means hunters need to be realistic about effort required and should plan for multiple days afield rather than expecting a quick fill.

Trophy potential in the counties overlapping Unit 42 is best described as moderate. There is a documented history of trophy-class deer coming from this broader area, but it isn't a unit known for producing an outsized number of exceptional bucks relative to neighboring country. Hunters chasing a genuine trophy-caliber buck should treat Unit 42 as a solid opportunity unit with some upside, not a unit to bank an once-in-a-lifetime trophy hunt on alone.

For hunters weighing whether to apply: Unit 42 makes the most sense for those who value guaranteed public access, don't mind working hard for a moderate success rate, and want a straightforward, no-frills Idaho deer hunt without wilderness-area complications. Hunters specifically hunting for a wall-hanger every single year would be better served by combining Unit 42 with research into adjacent units to compare trophy potential and access before committing points or tag dollars.

Harvest Success Rates

Unit 42's harvest data over the past four seasons shows meaningful year-to-year variation:

• 2025: 549 hunters afield, 95 harvested, 17% success
• 2024: 612 hunters afield, 146 harvested, 24% success
• 2023: 533 hunters afield, 110 harvested, 21% success
• 2022: 677 hunters afield, 165 harvested, 24% success

The four-year trend shows success rates fluctuating between 17% and 24%, with hunter participation also moving up and down — from a low of 533 hunters in 2023 to a high of 677 in 2022. Notably, 2025 marked both the lowest hunter turnout and the lowest success rate in this window, a combination worth watching if the trend continues into future seasons. Hunters should treat the 2022–2024 seasons, which clustered in the low-to-mid 20% range, as a more reliable baseline for typical unit performance than the softer 2025 numbers alone. Overall, hunters entering Unit 42 should plan for a real chance of coming home empty-handed roughly three out of every four hunts, which is standard for a public, general-opportunity deer unit of this type.

Trophy Quality

Trophy record data for the counties overlapping Unit 42 indicates a moderate history of trophy-class deer production. This means the area has produced some notable bucks over time, but it isn't among the standout trophy units in the region. Hunters should view Unit 42 as a unit capable of producing a quality buck for a patient, skilled hunter, but not a unit where trophy-class deer are a near-certainty.

Because trophy records are logged at the county level rather than the exact hunt-unit level, it's important to understand that any trophy history associated with Unit 42 is shared with neighboring units whose boundaries overlap the same counties. The animals behind those records could have been taken anywhere within that broader county footprint, not necessarily inside Unit 42's exact lines. This is standard practice across record-keeping systems and applies to virtually every western hunting unit, not just Unit 42.

Given the moderate trophy designation, hunters focused purely on antler size may want to supplement their Unit 42 research by comparing trophy histories of adjoining units before finalizing an application strategy, particularly if a specific trophy class is the primary goal of the hunt.

Access & Terrain

Unit 42's defining access feature is its 100% public land status — every acre of the unit's 859,257 total acres is open to hunters, with no private inholdings limiting where hunters can go. This is an exceptional access profile compared to many western units where checkerboard private-public ownership forces hunters to navigate access permissions or avoid large blocks of otherwise huntable terrain.

The unit carries 0% designated wilderness, meaning there are no Wilderness Act restrictions on mechanized access or additional logistical hurdles tied to wilderness boundaries. Hunters can plan trips using standard motorized access to trailheads and forest roads without needing to factor in wilderness-specific travel restrictions.

Elevation in Unit 42 ranges from 4,193 feet to 6,807 feet, a moderate band that suggests foothill and mid-elevation mountain terrain rather than extreme high-alpine country. This elevation profile typically supports a mix of habitat types — sagebrush-steppe lower elevations transitioning into timbered slopes higher up — which can hold deer across different times of the season depending on weather and forage conditions. Hunters should expect a range of terrain types within the unit rather than a single uniform landscape, and should be prepared for both open, brushy country and denser timbered pockets depending on where they choose to hunt.

Because the entire unit is public, DIY hunters have full flexibility to scout and hunt wherever conditions look best, without needing to identify private parcels to avoid. This makes Unit 42 a strong candidate for hunters who want to do their own boots-on-the-ground scouting rather than relying on negotiated private access.

How to Apply

Idaho's application system for Unit 42 deer tags follows a structured calendar with specific fees for residents and nonresidents. For the 2026 season, both resident and nonresident applications open May 1, 2026 and carry a deadline of June 5, 2026, with draw results published July 1, 2026.

2026 Nonresident Deer Application:

• Application fee: $18
• Tag fee: $352
• License fee: $185.00 (required to apply)
• Application opens: May 1
• Application deadline: June 5

2026 Resident Deer Application:

• Application fee: $6
• Tag fee: $25
• License fee: $14.75 (required to apply)
• Application opens: May 1
• Application deadline: June 5

Nonresident hunters should pay particular attention to the license fee requirement — Idaho requires hunters to hold a qualifying hunting license before they're even eligible to submit a draw application. This $185.00 license fee for nonresidents is separate from and in addition to the $18 application fee and $352 tag fee, meaning nonresidents should budget for all three costs when planning to apply. Residents face a substantially lower cost structure across the board, with a $6.25 license fee, $6.25 application fee, and $25 tag fee (license fee listed as $14.75 in the application info above — hunters should confirm the exact current license cost with the state agency).

For current draw odds specific to Unit 42, hunters should check HuntPilot's Idaho state page for up-to-date statistics rather than relying on historical assumptions, since draw dynamics shift from year to year based on applicant volume and tag allocations.

Dates and fees are subject to change. Always verify current application details at the state wildlife agency website before applying.

Frequently Asked Questions

What is the terrain like in Idaho Unit 42? Unit 42 spans elevations from 4,193 to 6,807 feet across 859,257 acres, suggesting a mix of foothill sagebrush country and mid-elevation timbered terrain rather than high alpine basins. With 0% wilderness designation, the unit is accessible via standard road and trail networks without wilderness-specific travel restrictions.

What is harvest success like in Unit 42? Success rates over the last four seasons (2022–2025) have ranged from 17% to 24%, with the most recent 2025 season posting the lowest rate at 17% on 549 hunters. Hunters should plan for a realistic chance of not filling a tag, as is typical for general public-land deer units, and treat the 2022–2024 average in the low-to-mid 20% range as the more consistent baseline.

How big are the deer in Unit 42? Trophy records for the counties overlapping Unit 42 show a moderate history of trophy-class deer production. The area has produced quality bucks over time, but it isn't considered a standout trophy destination compared to some neighboring units. Hunters focused specifically on trophy potential should weigh this moderate rating against their overall goals for the hunt.

Is Unit 42 worth applying for? Unit 42 is worth considering for hunters who prioritize guaranteed public land access — the unit is 100% public with no private inholdings to navigate. Combined with a track record of real, if moderate, harvest success and a moderate trophy history, it's a solid choice for hunters seeking a straightforward, accessible Idaho deer hunt rather than a unit chasing an exceptional trophy or extremely high success rate.

Does Unit 42 have any wilderness access considerations? No. Unit 42 carries 0% designated wilderness acreage, so hunters do not need to plan around wilderness travel restrictions or special access rules tied to wilderness boundaries. All public acreage in the unit is accessible under standard forest and public land travel rules.