Colorado Unit 70 Mule Deer Hunting Guide

Colorado Unit 70 is a well-known mule deer destination in the northwestern part of the state, drawing consistent interest from both resident and nonresident hunters looking for a solid mix of opportunity and public land access. Spanning 965,795 acres with elevations ranging from 4,838 to 13,986 feet, this unit offers a dramatic cross-section of terrain — from low sagebrush basins to high alpine country — that supports mule deer throughout the year.

With 74% of the unit in public ownership, Unit 70 gives DIY hunters plenty of room to roam without needing to lock down private land access. Only 3% of the unit falls within designated wilderness, meaning most of the accessible country can be reached without the logistical complications that come with wilderness travel restrictions. For hunters comparing northwest Colorado mule deer units, Unit 70 consistently comes up in conversation alongside neighboring units, and the data backs up why it deserves a look.

HuntPilot Analysis: Is Unit 70 Worth Applying For?

Based on harvest data compiled by HuntPilot, Unit 70 is a strong option for hunters who prioritize opportunity and consistency over chasing a wall-hanger. Success rates have held remarkably steady across recent seasons: 66% in 2025, 69% in 2024, 70% in 2023, and 68% in 2022. That's a four-year stretch where at least two out of every three hunters in the unit tagged out — a very respectable number for mule deer hunting anywhere in the West.

Hunter participation has fluctuated notably, from 1,113 hunters afield in 2022 up to 2,498 in 2024, before settling back to 1,531 in 2025. Harvest numbers moved in tandem, peaking at 1,719 deer taken in 2024. This tells hunters two things: the unit can absorb a meaningful number of tags while still producing high success, and tag allocation levels do shift year to year, which is worth watching when checking current draw odds on HuntPilot's Unit 70 page.

Where Unit 70 doesn't shine is trophy quality in the way some Colorado units do. Forum chatter consistently describes it as "a good unit but not trophy," and while that's anecdotal, it lines up with a broader theme: Unit 70 is built for hunters who want a good chance at filling a tag and enjoying big, huntable public ground — not necessarily for hunters chasing a specific book-class buck. That said, the counties overlapping this unit do carry a strong history of trophy-class mule deer in the record books, so exceptional bucks have come from this general area historically. Hunters should treat that as context rather than a guarantee — the same counties overlap several neighboring units, and trophy production doesn't mean every corner of Unit 70 is turning out giants every year.

The bottom line: if a hunter's priority is high odds of harvesting a mule deer on accessible public land, Unit 70 earns its reputation. If the priority is specifically hunting for a top-end trophy buck, this unit should be considered a solid opportunity unit with occasional trophy potential rather than a dedicated trophy destination.

Harvest Success Rates

Unit 70's harvest numbers are some of the more consistent in the state for mule deer. Over the four most recent seasons on record:

• 2025: 1,531 hunters, 1,014 harvested, 66% success
• 2024: 2,498 hunters, 1,719 harvested, 69% success
• 2023: 2,236 hunters, 1,574 harvested, 70% success
• 2022: 1,113 hunters, 757 harvested, 68% success

This four-year average sits comfortably in the high-60s to 70% range, which is a strong indicator that deer densities in the unit are sufficient to support solid harvest even as hunter numbers more than double from one year to the next. The jump from 1,113 hunters in 2022 to 2,498 in 2024 suggests tag quotas were increased significantly, yet success rates didn't collapse — actually improving slightly to 69%. That's a meaningful signal about herd health and huntability, since a spike in pressure without a corresponding forage base or deer population typically drags success rates down.

Hunters should note that "unit total" success figures blend all seasons and hunt types together, so individual season success (particularly later seasons when bucks may have moved due to weather) can vary from the blended average. Forum reports back this up, with hunters noting that timing and weather play a real role in encounter rates during certain seasons in Unit 70.

Trophy Quality

Colorado Unit 70 carries a mixed but informative trophy reputation. The counties overlapping this unit have a strong history of trophy records, which means genuinely big, book-quality bucks have come out of this general area over the years. That trophy pedigree is real and shouldn't be dismissed.

At the same time, on-the-ground accounts from hunters who've drawn tags in Unit 70 describe a unit better known for volume than for consistently big, mature bucks. One longtime hunter described tagging a respectable buck in the unit but noted deer densities have thinned somewhat compared to years past. Other hunters report mixed encounters — plenty of young bucks in some areas, and stretches where deer sightings were sparse.

Putting this together: Unit 70 should be viewed as having moderate-to-strong trophy potential depending on where in the unit a hunter focuses effort and how much scouting goes into finding older age-class bucks away from pressured access points. It is not marketed or perceived as one of Colorado's marquee trophy units the way some northwest Colorado units are, but the historical record-book presence in the surrounding counties means mature bucks are absolutely present for hunters willing to work for them. Hunters going into Unit 70 chasing a specific score should set realistic expectations — this is fundamentally an opportunity unit with trophy upside, not a guaranteed trophy unit.

Herd Health & Population Trends

The most recent wildlife survey data available for Unit 70 comes from 2024 and shows a buck:doe ratio of 33:100, based on a single survey year. A ratio in this range is on the lower end for mule deer herds, suggesting that buck numbers relative to does are somewhat limited compared to units with 40:100 or higher ratios. This aligns with forum feedback noting that while total deer numbers can be good in parts of the unit, mature buck density isn't as high as it may have been historically.

Because this reflects only one survey year, hunters should treat it as a single data point rather than a long-term trend. A single-year snapshot can be influenced by winter severity, survey timing, and sampling location within a large 965,795-acre unit. Hunters serious about understanding herd trajectory should track this ratio over subsequent years as more survey data becomes available on HuntPilot's unit pages, rather than drawing firm conclusions from one year alone.

Access & Terrain

Unit 70's terrain is genuinely diverse, spanning nearly 9,150 vertical feet from 4,838 feet at the lowest points to 13,986 feet at the highest peaks. This range means hunters can encounter everything from sagebrush flats and low foothill country to timbered mid-elevation slopes and true high-alpine basins, depending on where in the unit they focus their hunt. That elevation spread also means mule deer movement between summer and winter range can be significant within the unit itself, and hunters should expect deer distribution to shift depending on season timing and weather patterns.

With 74% of the unit classified as public land, Unit 70 is genuinely DIY-friendly. The large majority of the acreage is open to public access, giving hunters real flexibility to explore different elevation bands and drainages without needing to negotiate private land access. Only 3% of the unit is designated wilderness, so most of that public ground can be reached via standard vehicle and foot access without the extra logistics — or, for Colorado, any additional legal requirements — that heavier wilderness units impose.

Forum accounts reinforce that Unit 70 is a big, spread-out unit where success often comes down to legwork. Multiple hunters note plans to "spend the whole week" exploring before settling into an area, and describe mixed reports of deer density depending on specific pockets within the unit. Given the acreage and elevation range involved, hunters should plan to scout broadly — using HuntPilot's public land and terrain overlays to identify likely transition zones between elevation bands — rather than assuming any single access point will produce consistent action.

How to Apply

Draw odds for Unit 70 change from year to year based on tag quotas and applicant volume, so hunters should check current odds directly on HuntPilot's Colorado state page (/states/co) or the Unit 70 page before applying.

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 harvest success like in Colorado Unit 70? Harvest success has been consistently strong, ranging from 66% to 70% over the last four recorded seasons (2022–2025). This makes Unit 70 one of the more reliable units in northwest Colorado for hunters looking to fill a mule deer tag.

Is Unit 70 a good trophy mule deer unit? Unit 70 has moderate-to-strong trophy potential. The surrounding counties carry a genuine history of trophy-class record-book bucks, but on-the-ground hunter reports describe it more as a high-opportunity unit than a dedicated trophy destination. Mature bucks are present but require effort to locate away from pressured areas.

What is the terrain like in Colorado Unit 70? The unit spans an enormous elevation range, from 4,838 feet up to 13,986 feet, encompassing sagebrush basins, mid-elevation timber, and high alpine terrain. With 74% public land and only 3% wilderness, most of the unit is accessible without special access restrictions, but its size and elevation range means hunters should be prepared to cover ground.

How many deer are harvested in Unit 70 each year? Harvest totals have varied with hunter numbers, ranging from 757 deer harvested in 2022 (out of 1,113 hunters) up to 1,719 harvested in 2024 (out of 2,498 hunters). Success rates stayed consistent across that range, suggesting the unit can support higher hunter pressure without a major drop in success.

Is Colorado Unit 70 worth applying for? For hunters prioritizing a strong chance of harvesting a mule deer on accessible public land, yes — the success rate data supports Unit 70 as a reliable option. Hunters specifically chasing a top-end trophy buck should treat it as a unit with upside rather than a primary trophy target, and should check current draw odds and point requirements on HuntPilot before applying.