Colorado Bighorn Sheep Draw Odds: Unit-by-Unit Reality Check

Colorado issues roughly 240 to 280 Rocky Mountain bighorn sheep tags per year. That sounds like more than Wyoming’s allocation, but Colorado is also running a larger total applicant pool, and the demand for specific units — particularly the South Park country and the units around Summit and Clear Creek counties — is intense. Some of those premium units have preference point requirements that rival anything in the West.

The Colorado draw odds data tells the full story. What follows is how to read it and what to do with it.

Colorado’s Preference Point System for Sheep

Colorado uses a modified preference point system with a twist: after you accumulate points, you can either apply in the standard preference draw or enter a bonus point lottery for any species you have points for. The preference draw gives priority to high-point holders. The lottery gives every applicant a chance regardless of points.

Most serious sheep hunters stick to the preference draw. The lottery is a reasonable option for hunters who want a statistical longshot at a tag without committing to the full accumulation timeline — but in a competitive unit, the lottery adds one or two low-probability entries on top of the preference draw structure.

Nonresident sheep tags in Colorado run $2,079 for the tag plus $66 for the combo license. The tags are expensive whether you’re a resident or nonresident, but that cost is the smallest component of what a bighorn sheep hunt actually costs once you factor in gear, time off, and potentially an outfitter.

The Units

Colorado organizes sheep hunt areas with S-prefix designations (S-1, S-9, S-34, etc.) rather than numbered units. Each S-unit is a distinct sheep hunting area with its own ram population, tag quota, and point threshold.

S-9 — South Park / Park County

South Park is Colorado sheep hunting’s most well-known address. The unit sits at 9,000 to 11,000 feet in Park County, centered on the broad basin surrounded by the Mosquito and Front ranges. The ram population here is legitimate — mature South Park rams regularly push Boone & Crockett minimums, and the unit has a history of exceptional animals.

The point requirement reflects the reputation. S-9 has been drawing in the 18-to-24-point range for the premium rifle seasons over recent years, and the threshold has shown gradual creep as application pressure has increased. For a Colorado resident applying from scratch, this is a 20-plus-year project in the current environment. Non-residents face similar timelines.

S-34 — Tenmile / Blue River

The Blue River drainage north of Frisco, in Summit County. This unit runs from the Gore Range into the Tenmile Range, high alpine terrain that holds a solid ram population. S-34 has historically drawn in the 15-to-20-year range — competitive, but slightly more accessible than S-9 for hunters who want a premium Colorado sheep experience without the full S-9 commitment.

The terrain is demanding. The best rams in S-34 are on technical ground above treeline that requires solid backcountry fitness and navigation. Not a unit for first-time sheep hunters who underestimate the physical demands.

S-1 — North Park / Rawah

The North Park country in Jackson County — Colorado’s “cow country” in the northern San Juans — holds a distinct sheep population that draws with fewer points than the high-profile Summit and Park county units. S-1 has historically drawn in the 12-to-16-year range, making it a legitimate target for hunters who want a Colorado bighorn sheep tag in the medium term rather than the long term.

The rams here aren’t producing the same scores as South Park on average, but mature S-1 rams are respectable animals, and the hunting country — sage flats, aspen drainages, and the Rawah Wilderness — has its own character.

S-87 — Clear Creek / Upper South Platte

The Clear Creek drainage west of Denver and the upper South Platte country covers a population of bighorn sheep that benefit from being within an hour of metro Denver. That proximity cuts both ways: good annual survey data, veterinary monitoring, and active management from CPW on one hand — higher human contact pressure and some habituation on the other.

S-87 draws in a range that varies more year to year than the stable premium units, with some years clearing at 8 to 12 points and other years pushing higher. Worth watching in the Draw Odds Engine if you’re looking for a unit where the draw timeline is less certain but potentially faster than the standard 15-to-20-year path.

High-Altitude Southern Units

Units in the San Juan Mountains — S-55 (Weminuche), S-51, and surrounding areas — hold sheep in some of Colorado’s most remote and spectacular country. Tag allocations are small, which can mean either faster or slower draws depending on applicant pressure. Some of these southern units have benefited from herd expansion and rehabilitation work after earlier disease impacts, though herd health should be verified before committing.

Reading the Draw Odds Data

The Draw Odds Engine gives you Colorado sheep data broken out by unit with six years of history. Key things to look for:

The trend, not the last year. Point thresholds aren’t fixed — they shift based on how many applicants sit at each tier and how many tags are available. A unit that drew at 15 points last year might draw at 17 next year if several 16-point holders drew last season and the applicant pool has refreshed. Look at the six-year trend to understand the range and direction of threshold movement.

Quota volatility. Colorado adjusts sheep quotas based on annual population surveys and herd health assessments. Disease outbreaks, severe winters, and predation pressure all affect tag allocations. Units with stable quotas over six years are more predictable planning targets than units with year-to-year quota swings.

Resident vs. nonresident threshold. Colorado preference draw thresholds often differ between residents and nonresidents — residents may be drawing at 14 points in the same unit where nonresidents are drawing at 17. The Draw Odds Engine shows you this breakdown. Know which threshold applies to your situation.

Keep your Colorado sheep points tracked in the Preference Point Tracker alongside your Wyoming and other western accumulations. Multi-state sheep accumulation is common among serious hunters — running Colorado and Wyoming simultaneously gives you two paths to a Rocky Mountain sheep tag within a similar timeline.

Building a Colorado Sheep Strategy

Start now. Same advice as Wyoming, same reasoning. Every year you delay is a year added to the back end of your timeline.

Pick a target unit within the first three to four years of accumulation. Use the Draw Odds Engine to understand the current threshold for your target unit, then run the math on how many more years of accumulation you need. The Point Burn Optimizer can model this against current point creep rates — it won’t be perfectly accurate, but it gives you a defensible estimate to work from.

Check the target unit’s herd health. Unlike elk or deer — where a sub-optimal year in one unit doesn’t necessarily mean permanent decline — sheep populations are vulnerable to respiratory disease in ways that can set a herd back a decade. CPW publishes annual herd status reports. Verify before you spend 15 years accumulating points for a unit that’s been fighting pneumonia.

The Reality of Colorado Bighorn Sheep

Colorado bighorn sheep hunting is a 15-to-25-year project in the premium units. That’s not a bug — it’s the math of conservation-limited harvests in a heavily applied species. The hunters who draw the best tags are the ones who started applying when they were young and didn’t stop.

The Colorado bighorn sheep draw odds by unit are in the Draw Odds Engine. Pull up the data, identify your target, and start the clock.

Sources & verification

Seasons, license fees, application windows, and draw structure for Colorado change every year. Always verify the current details against the official Colorado agency before applying or hunting.

• Colorado Parks & Wildlife — cpw.state.co.us