Colorado GMU 161 Elk Hunting
Jackson County, northwest Colorado · 408 sq mi
Based on the EASIEST unit-wide bull or either-sex hunt code available to adult Colorado residents in the 2026 primary draw — the lowest preference-point tier that drew reliably. Private-land-only and Ranching for Wildlife hunts are excluded because neither is a unit-wide public-land opportunity — NOT because the public cannot draw them. A private-land-only license requires the hunter's own permission to hunt private ground; a Ranching for Wildlife license is valid on the participating ranches enrolled in that program. They are separate systems. Other weapons, seasons and nonresident applicants can require substantially more points. The band is a floor, not a target: even the easiest qualifying hunt here sits in that range.
What hunting GMU 161 is like
Game Management Unit 161 covers 408 square miles in Jackson County in the northwest region of Colorado. The unit is rolling, with some steeper breaks, spanning elevations from 7,800 feet to 12,200 feet with a typical elevation around 8,600 feet. Terrain is predominantly gentle to moderate, with 66 percent of the unit in gentle slopes and 28 percent in moderate slopes; steep and rugged ground comprises 6 percent combined. The country supports a mixed seasonal elk population that shifts through the unit as fall advances.
Public land makes up approximately 68 percent of the unit, managed by the U.S. Forest Service, Bureau of Land Management, and Colorado Parks and Wildlife as State Wildlife Areas. Colorado State Trust Land accounts for approximately 4.8 percent of the unit; hunting on trust lands is possible only where parcels are enrolled in CPW's Public Access Program. Private land comprises approximately 27 percent of the unit. Public ownership in total is about 73 percent, though actual huntable access depends on enrollment and management agreements.
Elk occupy the unit across multiple seasonal ranges. Overall range mapping covers the full unit, indicating widespread use potential. Summer range covers 47 percent of the unit with 10 percent classified as summer concentration, where elk cluster during the warm months. Winter range covers 40 percent with 18 percent as winter concentration. Migration corridors occupy 7 percent of the unit. As fall progresses and temperatures drop through November, with snowfall increasing from near zero in September to an average of 23.2 inches in November, elk shift from summer toward winter range. The extent and timing of this shift vary with weather and snow conditions.
The unit offers six public-hunting seasons plus a private-land-only season. Archery runs September 2–30 for either-sex and antlerless elk. Muzzleloader hunts occur September 12–20, also either-sex and antlerless. Four rifle seasons follow: 1st Rifle October 14–18 (either-sex and antlerless), 2nd Rifle October 24–November 1 (antlerless), 3rd Rifle November 7–15 (antlerless), and 4th Rifle November 18–22 (either-sex and antlerless). The archery season straddles the rut's onset and primary phase; muzzleloader hunts occur during the primary rut; early rifle seasons coincide with the rut's later phases and post-rut recovery; late rifle seasons fall during the migration transition. Overall hunter pressure is high. The unit draws at easy difficulty, often at zero preference points for the easiest qualifying adult-resident bull or either-sex hunt code.
Terrain & elevation
- Elevation
- 7,800–12,200 ft, typically around 8,600 ft
- Steepness
- Gentle — mean slope 8.8°
- Slope breakdown
- 66% gentle · 28% moderate · 5% steep · 1% rugged
- Ground you can count on
- ~279 sq mi, plus ~19 sq mi of State Trust Land where access depends on enrollment
Land & access
About 68% of GMU 161 is public land a hunter can count on — National Forest, BLM and State Wildlife Areas. A further 5% is State Trust Land, which is huntable only where CPW has enrolled it.
- National Forest40%
- BLM26%
- State Wildlife Area2%
- State Trust Land5%
- Unclassified ownership<1%
- Private27%
Colorado State Trust Land is open to public hunting only where it is enrolled in CPW's Public Access Program. Check current enrollment before planning around it.
Where elk live in the unit
Colorado Parks & Wildlife maps elk seasonal ranges statewide. This is how much of GMU 161 each range covers — the single best clue to whether elk are here in September, in November, or only passing through. The layers overlap, so they do not add to 100%.
- Overall Range100%the full extent of range CPW maps for elk — near 100% on most units, and not a statement about when elk are present
- Summer Range47%used in summer
- Winter Range40%used in winter
- Winter Concentration18%where elk bunch up in winter
- Summer Concentration10%where elk bunch up in summer
- Migration Corridors7%movement between ranges, not residence
Elk seasons & weapons (2026)
| Season | Dates | Tags offered |
|---|---|---|
| Archery | September 2 – September 30 | Either-sex, Antlerless |
| Muzzleloader | September 12 – September 20 | Either-sex, Antlerless |
| 1st Rifle | October 14 – October 18 | Either-sex, Antlerless |
| 2nd Rifle | October 24 – November 1 | Antlerless |
| 3rd Rifle | November 7 – November 15 | Antlerless |
| 4th Rifle | November 18 – November 22 | Either-sex, Antlerless |
| Private-land only | August 15 – January 31 | Either-sex, Antlerless |
Dates span every hunt code of that type in this unit and can differ by code. Confirm the current brochure with Colorado Parks & Wildlife before applying.
Fall weather
- September — highs around 64°F, lows around 38°F, about 0.2 in of snow (mid-elevation normals)
- October — highs around 51°F, lows around 28°F, about 4.7 in of snow (mid-elevation normals)
- November — highs around 38°F, lows around 19°F, about 23.2 in of snow (mid-elevation normals)
GMU 161 elk hunting FAQ
Can a first-time applicant with zero preference points draw a tag here?
Yes. The easiest qualifying adult-resident bull or either-sex code draws at zero preference points most years. This applies to specific hunts—other weapons, later seasons, and nonresident applicants require substantially more points—but entry-level applicants can expect to draw under favorable conditions.
Is this unit realistic for someone planning to hunt public land only?
Approximately 68 percent of the unit is generally open to public hunting across National Forest, BLM, and State Wildlife Area lands, providing substantial public access. However, actual huntability depends on road access, trailheads, and seasonal closures, which vary by location and year. Hunters should verify current access conditions with managing agencies before committing to the draw.
Does elk distribution shift toward private ground as fall advances?
Winter concentration ground comprises 18 percent of the unit, suggesting elk do cluster as conditions cool through November, but the mapping does not indicate whether that concentration occurs on public or private land. A hunter should scout specific drainages and aspect to determine how winter movement aligns with accessible public ground in this unit.
Which seasons align with the peak rut?
Archery (September 2–30) spans the rut's onset and primary phase, with the heaviest bugling typically September 11–30. Muzzleloader (September 12–20) occurs entirely within the primary rut. Both early seasons offer the best chance to hunt vocal bulls; later rifle seasons occur after the rut peaks and bulls become less responsive.
How much of the unit is actually hikeable terrain for a hunter on foot?
Rolling terrain with gentle to moderate slopes makes up 94 percent of the unit, offering reasonable foot access in most areas. Steep and rugged ground comprises 6 percent and may require more physical effort, but the overall slope is not prohibitive for hunters accustomed to moderate elevation gain.
What weather should a hunter expect during the rifle seasons?
October highs average 51°F with 4.7 inches of snowfall. By November, conditions shift dramatically: highs drop to 38°F with 23.2 inches of average snowfall, making late-season hunts significantly colder and potentially more challenging. Early rifle seasons offer milder conditions; late-season hunts require winter-weather preparation.
Data sources & methodology
- Colorado Parks & Wildlife — Big Game hunting — seasons, weapons, hunt codes and license types
- CPW — Primary Draw rules — how preference points and the hybrid draw work
- CPW — Elk statistics, draw recap and Drawn Out At reports — the point levels behind the draw-difficulty bands
- CPW — Secondary Draw — licenses remaining after the primary draw
- CPW — Maps and GIS (Species Activity Mapping) — elk seasonal range
- CPW — State Trust Land Finder — which State Trust acreage is enrolled and open to public hunting
- Federal and state land-ownership datasets — land ownership and access
- NOAA climate normals — fall weather
Draw difficulty is a qualitative band, not published odds — the note under the summary above states exactly which hunt code it describes. Land shares are separate, non-overlapping categories: publicly owned is not the same as open to hunting, and State Trust Land is huntable only where CPW has enrolled it. Unit data last updated August 28, 2026.