Colorado Unit 43 Mule Deer Hunting Guide

Colorado Unit 43 sits in a dramatically vertical landscape, spanning elevations from roughly 5,650 feet in the lower drainages to over 14,000 feet at the highest alpine peaks. That nearly 8,500-foot elevation band defines everything about mule deer hunting here — how deer move, where they summer, when they migrate, and how accessible they are depending on the time of season. With 336,309 total acres and 79% of that in public land, Unit 43 offers serious DIY access that many western Colorado units simply cannot match. Add in a 27% wilderness component and hunters are looking at some of the most rugged, uncompromised mule deer habitat in the state.

Unit 43 is a limited-entry draw unit, meaning access to tags is controlled and hunting pressure stays comparatively low relative to over-the-counter units across Colorado. The unit draws consistent interest from both resident and nonresident hunters chasing mature mule deer bucks in alpine and sub-alpine terrain. According to HuntPilot data, harvest success in Unit 43 has ranged from 41% to 46% over the most recent three years — a number that reflects both the quality of the hunting opportunity and the challenge of the country itself.

This is not a unit for the unprepared. The wilderness portion of this unit demands physical conditioning, proper gear planning, and realistic expectations about pack-out distances. But for hunters willing to put in the work, Unit 43 produces legitimate trophies in rugged, scenic country with the kind of public-land access that has become increasingly rare in the West.

Harvest Success Rates

Unit 43 has posted steady, above-average harvest success across the past three documented seasons. In 2025, 904 hunters took the field and 413 animals were harvested for a 46% success rate. The 2024 season saw increased hunter numbers — 1,264 total — with 557 animals harvested at a 44% success rate. In 2023, 1,142 hunters produced 463 harvests at a 41% success rate.

What these numbers reveal is a unit that consistently delivers results. A 41–46% success range over three years is notably strong for a Colorado limited-entry mule deer unit, particularly in high-elevation terrain with a significant wilderness component. These figures reflect total unit success, encompassing all draw hunts across the unit, so individual hunt success will vary depending on timing and specific draw.

The variation in hunter numbers — from 904 in 2025 to 1,264 in 2024 — likely reflects changes in tag allocation between seasons. Hunters should note that lower hunter counts in 2025 paired with higher success rates may indicate a tighter tag draw with a more concentrated effort from serious applicants. Regardless, the consistent 40%+ success rate across all three years signals that Unit 43 is producing reliably and the mule deer population is supporting sustainable harvest.

Trophy Quality

The counties overlapping Unit 43 carry an extensive history of trophy-class mule deer production. Based on HuntPilot's analysis of historical trophy records, this unit qualifies as having exceptional trophy potential by the standards of Colorado mule deer hunting. Trophy-class animals have been taken from this unit with regularity across multiple decades, and recent production has maintained that legacy.

Hunters considering Unit 43 with trophy expectations will find the unit's combination of high-alpine summer range, large tracts of wilderness, and limited hunting pressure creates ideal conditions for bucks to reach maturity. The 27% wilderness component is particularly significant — areas with limited road access consistently produce older age-class animals because the pressure gradient that drives mature bucks off public land simply isn't present at the same intensity.

That said, trophy-class bucks are never a guarantee in any unit. The rugged, vertical terrain means finding a specific buck requires scouting effort, glass time, and willingness to cover ground above timberline. Hunters who invest in pre-season research and glass high-elevation basins systematically give themselves a legitimate shot at a mature buck that most hunters never see.

Herd Health & Population Trends

The available wildlife survey data for Unit 43 covers a single survey year (2024), which limits the ability to draw multi-year trend conclusions. The reported buck:doe ratio from that survey was 26:100.

A 26:100 buck:doe ratio is below the benchmark that wildlife managers typically target for healthy mule deer herds — most agencies aim for ratios in the 30–35:100 range or higher for sustained trophy production. This number warrants attention, though with only one survey year available in the provided data, it's difficult to determine whether this reflects a declining trend, normal annual variation, or an artifact of survey methodology and sampling.

Hunters evaluating Unit 43 should factor this ratio into their expectations. A lower buck:doe ratio doesn't mean trophy bucks aren't present — mature bucks are notoriously difficult to count during aerial surveys, particularly in units with heavy timber and deep basins — but it does suggest hunters may encounter fewer mature males on a per-day basis than in units with higher surveyed ratios. The strong harvest success rates discussed above provide some counterbalance: the unit is clearly producing harvested animals at a solid rate despite the modest survey ratio.

Access & Terrain

Unit 43's 79% public land makes it one of the more accessible DIY units in the region. With only roughly 21% in private ownership, hunters generally have strong options for accessing the unit on foot without needing to secure private land permission. That is a significant advantage in a state where some of the best mule deer habitat is locked behind private boundaries.

The 27% wilderness designation introduces a different kind of access challenge. Wilderness areas within the unit require pack-in hunting — motorized vehicles and mechanized transport are prohibited. This means any hunting deep in the wilderness component involves significant physical commitment. For hunters who can manage the logistics, this wilderness buffer functions as a natural pressure valve: most casual hunters avoid it, leaving a meaningful portion of the unit lightly hunted relative to road-accessible terrain.

The elevation range — from 5,650 to 14,042 feet — is one of Unit 43's defining characteristics. Mule deer in high-elevation Colorado units typically spend the warmer months on alpine and sub-alpine summer range, then push to lower elevations as snow loads increase. Hunting this unit effectively often means chasing deer through a vertical migration, with mid-elevation transition zones being productive as the season progresses. Hunters should plan for highly variable weather conditions given this elevation range and be prepared to operate in exposed alpine environments.

The unit's total footprint of 336,309 acres is sizable enough that pressure in road-accessible areas doesn't necessarily reach into the back country. Hunters willing to travel on foot or horseback into the wilderness interior consistently report different hunting experiences than those staying close to trailheads and roads.

HuntPilot Analysis

Unit 43 is worth serious consideration for mule deer hunters at multiple experience levels, but the optimal strategy depends heavily on residency status and point investment.

For Colorado residents: The resident tag fee is $51 (plus the required $53.19 license fee and $9 application fee for 2026), which makes Unit 43 one of the more cost-accessible limited-entry opportunities in the state. With 41–46% success rates and extensive trophy history, this unit offers a high return on a modest financial investment. Resident hunters who can build preference points toward better draw prospects in this unit should view it as a legitimate long-term target. The combination of public land access, trophy potential, and verified success rates is difficult to beat at the resident price point.

For nonresident hunters: The economics shift considerably. A nonresident tag runs $507, plus the required $117.62 license fee, $11.49 application fee, and a $100 point fee for 2026. Total cost to apply is meaningful, and the tag itself represents a significant investment. Nonresidents should approach Unit 43 as a multi-year point strategy, not an impulse application. The draw is competitive enough that casual applicants are unlikely to succeed quickly. However, for nonresidents who have been systematically building Colorado deer preference points, Unit 43's combination of verified harvest success, strong trophy history, and genuine wilderness-grade back country represents a legitimate destination hunt.

Wilderness logistics: With 27% of the unit in wilderness designation, nonresident hunters considering the back-country sections should plan for either a horse-supported pack-in or a well-conditioned DIY backpack hunt. Colorado does not have the Wyoming guide requirement for wilderness areas, so nonresidents can hunt the wilderness legally without a licensed guide — but the physical and logistical demands are real and should not be underestimated. The rewards for hunters willing to get deep include reduced pressure and access to areas that see comparatively few hunters per season.

Bottom line: Unit 43 is a genuinely strong mule deer unit backed by consistent harvest data and a verified trophy history. It is not an easy draw, and it is not easy country. But for hunters who are serious about mule deer — particularly those willing to trade comfort for reduced pressure — it belongs near the top of any Colorado application strategy.

How to Apply

Colorado's deer draw uses a preference point system, where higher-point holders are drawn first for most limited-entry hunts. Points accumulate each year an applicant is not drawn, making annual applications a sound long-term strategy even for hunters who do not expect an immediate draw.

For the 2026 season, applications open March 1, 2026, with a deadline of April 7, 2026. Draw results are released May 26, 2026.

2026 Nonresident application costs:

• Application fee: $11.49
• Tag fee: $507.00
• License fee (required to apply): $117.62
• Point fee: $100.00

2026 Resident application costs:

• Application fee: $8.93
• Tag fee: $51.00
• License fee (required to apply): $53.19
• Point fee: $50.00

Colorado requires hunters to purchase a valid hunting license before applying for limited-entry draws — this license fee is separate from the application and tag fees and must be paid upfront as part of the application process.

For current draw odds by hunt and point level, visit HuntPilot's Colorado draw page at /states/co. Draw odds change each year as applicant pools and tag allocations shift — always consult current-year data before finalizing an application strategy.

Dates and fees are subject to change. Always verify current application details at the Colorado Parks & Wildlife website before applying.

Frequently Asked Questions

What is the terrain like in Colorado Unit 43?

Unit 43 is defined by extreme vertical relief — the unit spans from approximately 5,650 feet at lower elevations to over 14,042 feet at its highest alpine peaks. This creates a landscape that transitions from lower-elevation scrub and sagebrush country through dense timbered mid-slopes into open sub-alpine meadows and exposed alpine basins above timberline. The upper reaches of the unit include true alpine tundra terrain. Roughly 27% of the unit falls within designated wilderness, meaning a significant portion of the best back-country habitat requires a pack-in approach. It is physically demanding country across most of the unit, particularly for hunters targeting bucks that have spent the summer on high-elevation range.

What is the harvest success rate in Colorado Unit 43?

Unit 43 has posted consistent success rates of 41% to 46% over the past three documented seasons. In 2025, 46% of 904 hunters harvested a deer. The 2024 and 2023 seasons came in at 44% and 41% respectively. These numbers are strong relative to many Colorado limited-entry mule deer units and reflect a combination of manageable hunting pressure, significant public land access, and a resident mule deer population capable of supporting sustainable harvest year after year.

How big are the mule deer in Colorado Unit 43?

Based on HuntPilot's analysis of historical trophy records from the counties overlapping Unit 43, this unit has an extensive and consistent history of producing trophy-class mule deer. Trophy production has been documented across multiple decades and includes recent entries. Trophy quality in Unit 43 qualifies as exceptional relative to statewide averages. The wilderness terrain and limited hunting pressure in the back country are key factors in why mature bucks are able to reach the age classes associated with trophy-quality antler development.

Is Colorado Unit 43 worth applying for?

Yes — with appropriate expectations about draw difficulty. The unit's harvest data, trophy history, and public land access profile make it one of the more compelling mule deer draws in Colorado. For residents, the cost-to-opportunity ratio is strong, and the unit rewards hunters who can build preference points and access the back country. For nonresidents, it is a legitimate destination hunt for those with a meaningful point investment. The combination of 79% public land, an 8,500-foot elevation range, and consistent above-40% success rates is not common across the state's draw portfolio. Hunters who put in the scouting effort and are physically prepared for high-altitude terrain will find Unit 43 delivers on its potential.

How competitive is the draw for Colorado Unit 43 mule deer?

Unit 43 is a limited-entry draw unit, meaning tags are allocated by preference points and the draw is competitive. Nonresidents should expect this to be a multi-year point commitment rather than a quick draw. Residents with a moderate point investment have better prospects, but this is not a unit that draws regularly on zero or low points. For current draw odds broken down by hunt code and point level, visit HuntPilot's Colorado unit page at /states/co — draw odds are updated annually following the state's official draw report release.