Colorado Unit 42 Mule Deer Hunting Guide

Colorado Unit 42 sits in the western part of the state and draws consistent interest from both resident and nonresident hunters chasing mule deer. With 387,358 total acres and 57% public land, the unit offers a substantial base of accessible ground for hunters willing to put in the legwork, spread across elevations ranging from 4,771 feet up to 11,098 feet. That kind of vertical relief means hunters can find everything from low-elevation sagebrush and pinyon-juniper breaks to high timber and alpine basins within the same unit boundary, giving deer plenty of room to shift with weather and pressure throughout the year.

This is a unit that shows up regularly in online research threads from out-of-state hunters building a Colorado game plan, and for good reason — it combines a majority-public land base with a long-documented history of producing quality deer. But "worth applying for" depends heavily on what a hunter is looking for, how many points they're sitting on, and how they weigh trophy potential against access and hunting pressure. Below is a data-driven breakdown of what Unit 42 actually offers, using harvest, survey, and application data tracked by HuntPilot.

HuntPilot Analysis: Is Unit 42 Worth Applying For?

Unit 42 has some real strengths, but it isn't a slam-dunk unit for every type of hunter. On the positive side, harvest success has been strong and improving. In 2025, hunters posted a 62% unit-wide success rate, up from 53% in 2024, 53% in 2023, and 56% in 2022. That's a meaningfully high success rate for mule deer hunting in the West, and it suggests that hunters who draw a tag here and put in reasonable effort have a good chance of connecting on a deer.

The public land situation is workable but not overwhelming — 57% of the unit is public, meaning DIY hunters have real access options, but a substantial 43% of the unit remains in private hands. That mix means scouting matters: hunters need to identify which public parcels concentrate deer and avoid burning time on ground that borders posted private land without access.

On the trophy side, the counties overlapping Unit 42 carry an extensive history of trophy-class deer entering the record books, which points to strong long-term genetic potential and habitat quality in this part of the state. That said, hunters should remember that record-book entries are logged by county, not by unit, so that trophy pedigree is shared with neighboring units drawing from the same county lines — it doesn't mean every buck in Unit 42 itself is a giant, but it does mean the surrounding habitat has consistently proven capable of growing mature deer.

The one data point that tempers enthusiasm is the buck:doe ratio. The most recent wildlife survey (2024) showed a ratio of 28:100, based on a single survey year. That's on the lower end for a mule deer herd and suggests either a young buck age structure, meaningful hunting pressure, or both. With only one year of survey data available, it's hard to establish a trend, but hunters should treat that ratio as a signal that mature bucks may be harder to find relative to the overall deer population, even though overall harvest success is climbing.

Bottom line: Unit 42 is a legitimate consideration for hunters prioritizing a solid chance at tagging a mule deer on largely public ground, backed by a county-level trophy history that adds some upside. Hunters chasing a guaranteed shot at an exceptional, mature buck should temper expectations given the modest buck:doe ratio, but the unit remains a reasonable target, particularly for those willing to scout hard and hunt away from easy access points.

Harvest Success Rates

Unit 42's harvest numbers show a unit trending in the right direction. Here's the recent breakdown:

• 2025: 2,344 hunters, 1,449 harvested — 62% success
• 2024: 1,697 hunters, 906 harvested — 53% success
• 2023: 1,690 hunters, 897 harvested — 53% success
• 2022: 1,513 hunters, 843 harvested — 56% success

Two things stand out. First, success rates have held in a strong 53-62% range across four consecutive years, which is a solid, dependable number for mule deer hunting and speaks to a healthy, huntable deer population relative to tag numbers. Second, hunter numbers jumped considerably in 2025 — from roughly 1,500-1,700 hunters in prior years to 2,344 — yet success rate still climbed to 62% rather than dropping under the added pressure. That's a meaningful sign that the deer population is currently able to support more hunting pressure without a corresponding decline in hunter success.

Trophy Quality

Trophy data for the counties overlapping Unit 42 points to an extensive history of trophy-class mule deer coming out of this region, which qualifies as strong trophy potential based on the multi-decade record. Hunters should keep in mind that record-book entries are attributed to the county rather than the specific unit, meaning that trophy history is shared with neighboring units pulling from the same overlapping counties — a mature buck credited to this general area could have been taken in Unit 42 or in an adjacent unit.

That caveat aside, the presence of an extensive trophy record in this part of Colorado indicates the habitat and genetics here are fully capable of producing mature, well-developed bucks. Combined with the unit's strong harvest success rates, Unit 42 offers a credible mix of opportunity and trophy upside — though the modest recent buck:doe ratio suggests hunters shouldn't expect every mature buck class animal to be easy to find. Patient hunters willing to get off the beaten path and glass hard, particularly on the unit's higher-elevation ground away from easy road access, stand the best chance of encountering an older-age-class buck.

Herd Health & Population Trends

The only wildlife survey data available for Unit 42 comes from 2024, showing a buck:doe ratio of 28:100 based on a single survey year. This is a lower ratio relative to a healthy target range for mule deer herds, and it likely reflects some combination of hunting pressure and a buck age structure skewed toward younger animals.

Because this reflects just one survey year, it's not possible to establish a multi-year trend from the data provided. Hunters should treat this number as a single data point rather than a definitive statement on herd health, but it is a reasonable signal that mature bucks make up a smaller share of the buck population here than in units with higher ratios. Hunters weighing Unit 42 against other options should factor this ratio into their expectations, particularly if trophy quality is the primary goal rather than overall harvest opportunity.

Access & Terrain

Unit 42 spans a wide elevation range, from 4,771 feet at its lowest points to 11,098 feet at its highest, giving the unit a genuine mix of terrain types. Lower elevations tend toward sagebrush flats and broken country, while the upper end of that range pushes into high timber and alpine terrain. This spread means deer have room to move seasonally, and hunters should be prepared to adjust their approach based on where in that elevation band they're hunting and how weather is pushing animals at any given time.

With 387,358 total acres and 57% public land, there's a solid base of public ground to hunt, but the 43% private-land component means access isn't unlimited. Hunters doing their own scouting should pay close attention to property boundaries and focus effort on public blocks that offer real depth away from roads and private inholdings, rather than public land that's hemmed in by private ground on multiple sides. There is no wilderness acreage in Unit 42, so hunters won't encounter wilderness-specific access restrictions here, and the unit is generally reachable via standard road access rather than requiring extended pack-in travel, though rugged terrain at the higher elevations should still be expected for hunters chasing deer into the timber.

Hunters planning to camp in the unit should be aware that access and camping conditions can shift quickly with weather, particularly for later hunts pushing into colder months when snow can affect both road conditions and deer movement toward lower elevations. For up-to-date terrain and public land mapping specific to areas within Unit 42, hunters can use HuntPilot's mapping tools to identify public parcels, elevation bands, and potential access routes before heading out.

How to Apply

Colorado's 2026 deer application window opens March 1, 2026, with a deadline of April 7, 2026, for both resident and nonresident applicants. Draw results are expected May 26, 2026.

For 2026, the fee structure breaks down as follows:

Resident applicants:

• Application fee: $9
• Tag fee: $51
• Qualifying license fee: $53.19 (required to apply)
• Preference point fee: $50

Nonresident applicants:

• Application fee: $11
• Tag fee: $507
• Qualifying license fee: $117.62 (required to apply)
• Preference point fee: $100

Colorado's draw system uses true preference points, meaning the highest point holders draw first and a sufficient point level can guarantee a tag on many hunts — this is not a weighted lottery. Hunters should note that a successful draw consumes accumulated points for that species, so anyone who draws a Unit 42 deer tag will start rebuilding points from zero afterward. Colorado also requires holding a qualifying license before applying, which is a separate cost from the application fee itself and should be factored into total budgeting.

For current draw odds specific to Unit 42 and point-level breakdowns, hunters should check HuntPilot's Colorado state page at /states/co, which tracks year-specific application data.

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 Colorado Unit 42? Unit 42 covers a wide elevation range from 4,771 to 11,098 feet, offering a mix of lower-elevation sagebrush and broken terrain up through high timber and alpine country. This spread allows deer to move seasonally with weather and pressure. There is no wilderness acreage in the unit, so access is generally road-based rather than requiring extended backcountry travel, though the higher-elevation terrain still demands solid physical conditioning.

What is harvest success like in Unit 42? Harvest success has been strong and trending upward in recent years, with 62% of hunters tagging a deer in 2025, following rates of 53% in 2024, 53% in 2023, and 56% in 2022. These numbers reflect a healthy, huntable deer population capable of supporting increased hunter numbers without a drop in success.

How big are the deer in Unit 42? The counties overlapping Unit 42 carry an extensive history of trophy-class mule deer entering the record books, pointing to strong long-term trophy potential in this part of Colorado. That said, this trophy history is shared across neighboring units drawing from the same counties, and the most recent buck:doe survey ratio (28:100 in 2024) suggests mature bucks may represent a smaller share of the population than in units with higher ratios. Hunters chasing an exceptional buck should expect to put in real scouting time away from easy access.

Is Unit 42 worth applying for? Yes, with realistic expectations. Unit 42 combines a majority-public land base (57%), consistently strong harvest success rates, and a county-level trophy history that points to real upside. It's a solid option for hunters prioritizing a good chance at tagging a mule deer on accessible public ground, though the modest recent buck:doe ratio means hunters chasing a truly exceptional, mature buck should be prepared for a more challenging hunt requiring effort away from roads and easy access points.

What should I know before camping in Unit 42? While specific campgrounds aren't part of the data tracked here, hunters researching the unit should plan for variable weather, particularly during later hunts when snow can affect both access and deer movement toward lower elevations. Given the unit's 43% private land component, hunters should confirm public land boundaries carefully before setting up camp, and HuntPilot's mapping tools can help identify public parcels suitable for camping and access ahead of the season.