Colorado GMU 501 Pronghorn Hunting
Park and Jefferson counties, central Colorado · 502 sq mi
Based on the EASIEST unit-wide buck 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 501 is like
Colorado GMU 501 spans 502 square miles across Park and Jefferson counties in the central region, rising from a low of 6,100 feet to a high of 12,400 feet with typical elevations near 9,300 feet. The terrain is rolling to moderately steep, with 27 percent gentle ground, 56 percent moderate, and 17 percent steep to rugged combined. The unit covers a range of pronghorn habitat, though pronghorn use only a limited portion of the available ground.
Generally open National Forest and State Wildlife Areas make up roughly 89 percent of the unit's 502 square miles, or about 448 square miles. Private land accounts for roughly 8.7 percent, with the remainder classified as unclassified ownership. The public ground is managed by the U.S. Forest Service and Colorado Parks and Wildlife, offering access to hunters across most of the unit, though roads, trailheads, and private inholdings influence where that access can actually be exercised.
Pronghorn range mapped by CPW covers only 4 percent of the unit overall, with Winter Range marking just 2 percent. This sparse distribution means pronghorn occupy a small portion of the available habitat and are concentrated in specific areas rather than spread across the broader landscape. A hunter should expect to locate animals in limited zones rather than throughout the unit's expanse.
The unit offers three pronghorn seasons: Archery from August 15 through September 20 for doe or buck; Muzzleloader from September 21 through September 29 for doe or buck; and Rifle from October 3 through October 11 for doe or buck. The archery season spans the pre-rut and into the primary rut phase. The muzzleloader season encompasses the tail end of the primary rut and early post-rut recovery. The rifle season falls entirely within the late rut and post-rut recovery phase. Overall hunter pressure in the unit is low. Draw difficulty for the easiest unit-wide buck or either-sex hunt code available to Colorado residents is very hard, requiring 6 to 9 preference points.
Terrain & elevation
- Elevation
- 6,100–12,400 ft, typically around 9,300 ft
- Steepness
- Steep — mean slope 16.5°
- Slope breakdown
- 27% gentle · 56% moderate · 16% steep · 1% rugged
- Ground you can count on
- ~448 sq mi
Habitat & cover
What actually grows here, by elevation. Each band adds to 100% on its own — these are shares of that band, not of GMU 501.
Lower elevations
- Conifer55%
- Sagebrush37%
- Grass and meadow5%
- Other cover2%
- Riparian2%
Mid elevations
- Conifer55%
- Grass and meadow18%
- Sagebrush15%
- Aspen7%
- Riparian4%
Higher elevations
- Conifer75%
- Sagebrush11%
- Riparian5%
- Aspen4%
- Grass and meadow4%
Cover classes from the USGS National Land Cover Database, split into elevation bands. “Other cover” is the remainder of the classification — bare ground, water, agriculture and developed land — and is left unnamed rather than guessed at.
Land & access
About 89% of GMU 501 is public land a hunter can count on — National Forest and State Wildlife Areas.
- National Forest89%
- State Wildlife Area<1%
- State Trust Land<1%
- Unclassified ownership2%
- Private9%
“Ownership unclassified” means the source dataset does not record an owner for that acreage. It is not known to be public or private.
Where pronghorn live in the unit
Colorado Parks & Wildlife maps pronghorn seasonal ranges statewide. This is how much of GMU 501 each range covers — the single best clue to whether pronghorn are here in September, in November, or only passing through. The layers overlap, so they do not add to 100%.
- Overall Range4%the full extent of range CPW maps for pronghorn — near 100% on most units, and not a statement about when pronghorn are present
- Winter Range2%used in winter
Pronghorn seasons & weapons (2026)
| Season | Dates | Tags offered |
|---|---|---|
| Archery | August 15 – September 20 | Doe, Buck |
| Muzzleloader | September 21 – September 29 | Doe, Buck |
| Rifle | October 3 – October 11 | Doe, Buck |
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 36°F, about 0.2 in of snow (mid-elevation normals)
- October — highs around 52°F, lows around 27°F, about 3.7 in of snow (mid-elevation normals)
- November — highs around 41°F, lows around 18°F, about 9.1 in of snow (mid-elevation normals)
GMU 501 pronghorn hunting FAQ
How much ground can a public-land pronghorn hunter actually hunt in this unit?
Roughly 448 square miles of National Forest and State Wildlife Areas are open to public hunting, representing about 89 percent of the unit. Access depends on roads, trailheads and how private inholdings are distributed, which vary by area. Checking a current map and scouting the specific drainage or zone before the season is essential.
Is this unit realistic for a pronghorn hunter with no preference points?
The primary draw for the easiest unit-wide code requires 6 to 9 preference points, making a zero-point applicant unlikely to draw through the main lottery. The secondary draw in June operates on pure random selection with no points used or awarded, and leftover licences may become available after the primary draw, both open to anyone. Neither route is certain, but they remain available to applicants without points.
Where should a hunter expect to find pronghorn in this unit?
CPW maps pronghorn range across only 4 percent of the unit, with winter range comprising just 2 percent. Rather than scattered across the full landscape, pronghorn are concentrated in specific areas within the unit. Scouting in advance and focusing on mapped range zones maximizes a hunter's efficiency.
Does this unit get crowded with hunters?
Overall hunter pressure in the unit is low, meaning few hunters actively pursue pronghorn here. Low pressure does not depend on how easily tags draw; a unit can be lightly hunted despite difficult odds. Hunters who draw will encounter few others on the ground.
Which season aligns best with peak rut activity?
The muzzleloader season from September 21 to 29 sits squarely in the primary and early post-rut phases, when pronghorn rut behavior is most pronounced. The archery season bridges pre-rut and rut phases, while the rifle season falls into post-rut recovery. For rut hunting, muzzleloader offers the strongest alignment.
What weather should a hunter expect during these seasons?
September archery sees highs around 64 degrees and lows around 36 degrees with minimal snowfall. October rifle season cools to highs around 52 degrees and lows around 27 degrees, with about 3.7 inches of monthly snowfall. Weather becomes progressively colder and wetter as the fall advances.
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 — Pronghorn 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
- USGS / MRLC — National Land Cover Database — habitat and cover classes by elevation band
- CPW — Maps and GIS (Species Activity Mapping) — pronghorn seasonal range
- CPW — State Trust Land Finder — which State Trust acreage is enrolled and open to public hunting
- USGS PAD-US — Protected Areas Database of the United States — land ownership and access
- Daymet daily climate, 1991–2020 (Oak Ridge National Laboratory) — 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 September 24, 2026.