Colorado Unit 43 Elk Hunting Guide

Colorado Unit 43 sits in the northwest part of the state, spanning elevations from 5,650 feet up to 14,042 feet across 336,309 total acres. For elk hunters weighing where to spend a hard-earned tag, Unit 43 offers a mix of high public land access and rugged, varied terrain that deserves a close look before applying. With 79% of the unit in public ownership and 27% designated wilderness, this is a unit that rewards hunters willing to get into remote country — but the harvest numbers tell a more nuanced story than the terrain alone suggests.

This article breaks down what the data actually shows for Unit 43: recent harvest trends, herd composition from multiple years of wildlife surveys, what the trophy record books say about the surrounding counties, and exactly how to apply for 2026 and 2028 seasons. All figures below come from HuntPilot's data tracking, and where the data doesn't exist, we say so rather than guessing.

Harvest Success Rates

Unit 43's elk harvest numbers have moved considerably over the past three years, and hunters should pay close attention to that volatility when setting expectations.

• 2023: 6,087 hunters afield, 650 elk harvested — an 11% success rate
• 2024: 5,385 hunters afield, 955 elk harvested — an 18% success rate
• 2025: 1,562 hunters afield, 236 elk harvested — a 15% success rate

Two things stand out. First, hunter numbers dropped sharply from 2024 to 2025 — from 5,385 down to 1,562 — while success rate held in a reasonably narrow band (11% to 18%) across all three years. Second, the swing from an 11% success rate in 2023 to 18% in 2024 shows this unit's harvest outcomes aren't static year to year; conditions, weather, and elk movement clearly play a role in a given season's result. Hunters should treat 15-18% as a realistic recent baseline rather than assuming an all-time high or low year is typical.

HuntPilot Analysis: Is Unit 43 Worth Applying For?

Unit 43 is a unit of trade-offs. On the access side, it scores well — 79% public land ownership means DIY hunters have real room to work, and the 27% wilderness component adds a genuine backcountry element for hunters willing to hike away from roads. The elevation range, from valley floor around 5,650 feet up past 14,000 feet, means hunters can chase elk across multiple vegetation zones and escape crowds by working higher basins later in the season.

On the numbers side, the picture is mixed. Success rates in the 11-18% range are middling — not a slam-dunk unit, but not a graveyard either. The bull:cow ratio, discussed below, is a genuine concern for bull hunters chasing mature animals and should factor into whether hunters see this as a trophy unit or a general opportunity unit.

The trophy potential from the surrounding counties is moderate — there's some history of quality animals coming from this part of the state, but it isn't a unit with a deep, decade-spanning trophy pedigree. Hunters chasing a genuine trophy-class bull should treat Unit 43 as a solid opportunity unit with occasional exceptional animals, not a unit built around consistently producing giants.

Bottom line: Unit 43 is worth applying for if hunters prioritize public land access, varied terrain, and a realistic shot at filling a tag over chasing a wall-hanger. Hunters fixated purely on trophy quality may want to weigh this unit against others with stronger, more consistent trophy production before committing points.

Herd Health & Population Trends

HuntPilot's wildlife survey data for Unit 43 covers six survey years between 2018 and 2024, showing an average bull:cow ratio of 25:100 across that span. This is on the lower end for elk herds generally, and it's a meaningful data point for hunters specifically targeting mature bulls.

A 25:100 ratio suggests bull numbers relative to cows are limited compared to units managed more conservatively for bull escapement. This doesn't mean bulls are absent — it means bull encounter rates during the hunt are likely to be lower than in units running 30-40 bulls per 100 cows or higher. Hunters should factor this ratio into their expectations for daily bull sightings and plan accordingly, putting extra weight on scouting and glassing time rather than assuming target-rich bull encounters.

Because this average is drawn from six years of survey data rather than a single anomalous count, it should be treated as a reasonably reliable long-term indicator of the herd's bull component, rather than a one-year statistical blip.

Trophy Quality

Trophy records from the counties overlapping Unit 43 show a moderate history of trophy-class elk. This isn't a unit with a thin or nonexistent trophy record, but it also isn't among the state's elite bull-producing pockets. Hunters have taken quality animals from this general area over time, and the trophy potential should be considered realistic but not exceptional.

It's worth noting that trophy records are logged by county, not by hunt unit, so any trophy history attributed to this area is shared with neighboring units that overlap the same counties. A hunter drawing Unit 43 shouldn't assume every recorded trophy animal came specifically from within this unit's boundary — but the county-level data still gives a useful directional sense of what the broader area is capable of producing.

Given the moderate trophy history combined with the below-average bull:cow ratio noted above, hunters should approach Unit 43 primarily as an opportunity and experience unit, with trophy potential as a possible bonus rather than the primary draw.

Access & Terrain

Unit 43's public land percentage of 79% is a significant asset for hunters planning a DIY trip — the large majority of the unit is open to public access, giving hunters room to spread out, scout multiple drainages, and avoid concentrating entirely on a handful of access points.

The 27% wilderness designation adds another dimension. Wilderness areas in Colorado carry no guide requirement for nonresidents (unlike Wyoming), so hunters from any state can access these areas unguided — but wilderness travel means no motorized access, so hunters planning to hunt the wilderness portion of Unit 43 should be prepared for foot or horseback travel and multi-day pack-in logistics.

The elevation swing from 5,650 feet to 14,042 feet is substantial. This range allows elk to move across a wide range of habitat depending on weather and season, from lower sagebrush and timber transition zones up to high alpine basins near timberline. Hunters should plan their scouting and hunt strategy around elevation banding — checking lower elevations early and being ready to push higher as conditions and elk movement dictate. HuntPilot's map tools, including public land overlays and terrain layers, are useful for identifying specific drainages, water sources, and elevation bands worth scouting within the unit's boundary before hunters ever set boots on the ground.

How to Apply

Colorado's elk application system uses separate fee structures for residents and nonresidents, along with a preference point system that affects draw odds in the state's limited-entry hunts. Here's what the data shows for Unit 43 and Colorado's broader elk application process:

Colorado's draw system is a true preference point structure — the highest point holders draw first, meaning enough accumulated points can guarantee a tag on many hunts. This is different from a weighted lottery; it's a straightforward queue based on points held. Hunters should check HuntPilot's Unit 43 page or Colorado's state page for current draw odds and point requirements specific to this unit's hunts, since those figures shift from year to year.

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

Frequently Asked Questions

What is the terrain like in Colorado Unit 43? Unit 43 spans a dramatic elevation range from 5,650 feet to 14,042 feet, meaning hunters encounter everything from lower valley terrain to high alpine basins near timberline. With 79% public land and 27% designated wilderness, there's substantial room for DIY hunters to explore multiple terrain types and elevation bands throughout a hunt. The wilderness component means portions of the unit require foot or horseback access with no motorized travel.

What is harvest success like in Unit 43? Recent harvest success in Unit 43 has ranged from 11% to 18% over the 2023-2025 seasons. The 2024 season posted the highest success rate at 18% with 955 elk harvested among 5,385 hunters, while 2023 saw a lower 11% success rate. Hunter numbers dropped significantly in 2025 to 1,562 hunters, who posted a 15% success rate. Hunters should expect moderate, variable success rather than assuming any single year's numbers as the norm.

How big are the elk in Unit 43? The counties overlapping Unit 43 show a moderate history of trophy-class elk in the record books, shared with neighboring units in the same county boundaries. Combined with a below-average bull:cow ratio of 25:100 recorded across six survey years (2018-2024), hunters should expect this unit to produce solid, opportunity-driven elk hunting rather than a consistent trophy-bull destination. Mature bulls are present but likely less abundant relative to cow numbers than in units with stronger bull escapement.

Is Unit 43 worth applying for? For hunters prioritizing public land access and varied terrain, yes — 79% public ownership and a wide elevation range make this a workable DIY unit. For hunters chasing primarily trophy-class bulls, the moderate trophy history and lower bull:cow ratio suggest tempering expectations. It's best suited to hunters looking for a legitimate opportunity hunt in rugged, accessible country rather than a unit built around consistently big bulls.

What is the bull-to-cow ratio in Unit 43 and why does it matter? Across six survey years from 2018 to 2024, Unit 43 has averaged a 25:100 bull-to-cow ratio. This is on the lower end for elk units and suggests fewer bulls relative to cows compared to units managed more conservatively for bull numbers. Hunters should plan for more time spent locating bulls and weight their strategy toward thorough scouting rather than assuming high daily bull encounter rates.