Arizona Unit 37B Bighorn Sheep Hunting Guide
Drawing a desert bighorn sheep tag in Arizona Unit 37B is, for most hunters, the hunt of a lifetime — and a tag most applicants will spend a decade or more trying to draw. This low-desert unit along the lower reaches of the state sits at the heart of Arizona's desert sheep country, and the forums light up every year with hunters who finally got "the call" and are scrambling to learn the ground before their season arrives. If you're researching Unit 37B because you just drew — or because you're trying to decide where to point your applications — this guide breaks down what the data actually shows.
Unit 37B spans 755,947 acres of rugged desert terrain, with elevations ranging from a low of 1,424 feet up to 5,586 feet. That nearly 4,200-foot spread means hunters will move between flat desert washes and steep, broken mountain terrain within the same unit — classic desert bighorn habitat. Public land makes up 91% of the unit, which is about as good as it gets for access in Arizona sheep country; DIY hunters and those working with a guide will have the vast majority of the unit open to them without needing to navigate private land permissions.
This is strictly a limited-quota draw unit. There is no general season here — every bighorn sheep hunt in 37B, including hunts for mature rams, is allocated through Arizona's draw system. That makes understanding the structure of the application process, and what to expect once you have a tag in hand, essential homework before the season starts.
HuntPilot Analysis: Is Unit 37B Worth Applying For?
For desert bighorn sheep, almost every unit in Arizona is worth applying for — the species itself is the draw, and tags are scarce enough statewide that any opportunity carries weight. Unit 37B specifically brings a few things to the table that make it a strong target for applicants willing to play the long game.
First, the trophy picture. The counties overlapping Unit 37B carry a strong history of producing trophy-class rams, which is a meaningful signal for a species where record-book quality is concentrated in a relatively small number of desert units statewide. That trophy pedigree is shared with neighboring units in the same counties — the animals behind those records could have come from anywhere across that broader landscape — but it still tells hunters that the genetics and habitat in this part of the state are capable of growing exceptional rams.
Second, the access situation is about as favorable as desert sheep hunting gets. At 91% public land, hunters drawing this tag won't be fighting for permission slips or navigating a patchwork of private parcels. The terrain itself — low desert basins climbing into desert mountain ranges — is difficult, but it's accessible difficulty, not access-blocked difficulty.
Third, and this requires some caution: the recent harvest numbers. In 2025, 2024, and 2023, this unit recorded just 1 hunter and 1 harvest each year, a 100% success rate across all three seasons. That's an extremely small, single-tag-holder sample each year — not a statistical trend, just a reflection of how few tags this unit allocates in a typical year. The 2022 data shows 10 hunters and 100 harvested animals, a number that is clearly a reporting artifact at the unit-total level rather than a literal outcome, and shouldn't be read as 10 individual hunters each tagging 10 rams. What the three single-tag years do confirm is what any desert sheep hunter already assumes going in: when Arizona issues a tag in a unit like 37B, the hunter who draws it is overwhelmingly likely to fill it, given the amount of scouting time, outfitter support, and preparation that goes into one of these once-in-a-lifetime tags.
The honest takeaway: Unit 37B is worth applying for if desert bighorn sheep is the species a hunter is building toward. It is not a unit to chase opportunistically — this is a long-term point-building target, like virtually every desert sheep unit in Arizona.
Herd Health & Population Trends
Arizona Game and Fish's 2024 survey data for the area shows an average buck:doe-equivalent ratio of 28 rams per 100 ewes, drawn from a single survey year with roughly 50 animals observed per count. That's a thin dataset — one survey year and a modest sample size — so hunters should treat this as a snapshot rather than a definitive trend line. A single-year survey with around 50 total animals observed doesn't provide the multi-year context needed to say definitively whether the ram segment of the herd is expanding or contracting; what it does confirm is that Arizona Game and Fish is actively monitoring the population, which is standard practice in units that continue to produce limited-quota tags.
Hunters who draw this tag should treat the survey numbers as a starting point for conversations with the local wildlife manager rather than a final verdict on herd quality. Biologists who fly current surveys will have far more current, ground-truthed information than a single annual composition count can offer.
Trophy Quality
Desert bighorn sheep from the counties overlapping Unit 37B carry a strong history of trophy-class production. That reputation is shared across neighboring units within the same counties — trophy record-book entries are logged by county, not by individual hunt unit, so a strong trophy history here reflects the broader region's genetic and habitat quality rather than a guarantee tied exclusively to 37B's boundaries. Still, for a hunter who has just drawn this tag, that regional trophy pedigree is a meaningful data point: it means mature, record-class rams have come from this stretch of desert sheep country with some regularity over the years, and the habitat here is clearly capable of growing rams that score well into the upper tiers of the species.
Given how few tags Arizona issues for this unit in any given year, hunters shouldn't expect a numbers game — there's no "average" ram in a population this lightly hunted. Instead, the trophy story here is about potential: the genetics and age structure exist in this region to produce an exceptional ram, and a hunter with a tag in hand should scout broadly and be patient rather than settling for the first legal ram encountered.
Access & Terrain
Unit 37B's terrain runs from low desert flats at 1,424 feet up through rocky desert mountain ranges topping out near 5,586 feet. That elevation range is typical of Arizona desert sheep country — rams will often be found bedded on rimrock and broken rock faces well up in the higher terrain, descending to feed and water in the lower benches and washes. Glassing from a distance across open desert terrain is the standard approach, and hunters should expect long-range spotting scope work punctuated by difficult, technical stalks across loose rock and steep grades.
With 91% of the unit in public ownership, access itself isn't the primary challenge here — physical terrain and the sheer size of the unit (over 755,000 acres) are. Covering that much ground to pattern a specific ram, or several candidate rams, takes real time. The forum threads from hunters who've drawn this tag consistently emphasize how much scouting matters precisely because the unit is large and the terrain is unforgiving; hunters who live within reasonable driving distance and can make repeated trips before their season have a real advantage over those parachuting in cold. There is no wilderness designation within this unit, so motorized access via existing routes is more available than in wilderness-restricted desert sheep units elsewhere in the state — though hunters should always confirm current road status with Arizona Game and Fish or the managing land agency before planning a trip.
Hunters working through HuntPilot's unit data can use the mapping tools to overlay public land boundaries and plan scouting routes across the unit's elevation bands before ever setting foot in the field — a meaningful head start when the terrain is this vast and the season this short.
How to Apply
Arizona desert bighorn sheep tags are allocated entirely through the state's limited-quota draw system — there is no over-the-counter or general-season option for this species anywhere in the state, and Unit 37B is no exception. Both residents and nonresidents must apply through Arizona Game and Fish's draw application, with separate resident and nonresident allocations built into the tag quota for most hunts.
Arizona's system awards bonus points to unsuccessful applicants, and competition for desert sheep tags statewide is intense — some units require a decade or more of accumulated points before an application becomes competitive. Hunters should be realistic about the time horizon: this is a species where most successful applicants have been building points for years, and a single year of applying in a unit like 37B is very unlikely to produce a tag.
Because application deadlines, fees, and current draw odds change from year to year, hunters should not rely on static figures. For the current application windows, fees, and bonus point requirements, visit HuntPilot's Arizona state page at /states/AZ, and check the specific unit page for 37B for the most current draw statistics before submitting an application.
Frequently Asked Questions
What is the terrain like in Arizona Unit 37B? The unit is classic low-desert sheep country, ranging from 1,424 feet at its lowest points to 5,586 feet in its highest desert mountain terrain. Expect steep, rocky slopes, broken rimrock, and open desert basins that require long-distance glassing and technical stalking. With 91% of the unit in public ownership, access to that terrain is broadly available, though the ruggedness and sheer size of the unit — more than 755,000 acres — make thorough scouting a significant undertaking.
What is harvest success like for sheep hunters in Unit 37B? Recent individual-tag seasons (2023, 2024, and 2025) each show a single hunter harvesting a single ram, for 100% success in each of those years. That reflects how desert sheep tags are typically hunted in Arizona — a hunter who draws a tag of this caliber, after years of scouting and preparation, is very likely to fill it. These are small sample sizes by nature; Arizona issues very few tags per unit per year for this species.
How big are the rams in Unit 37B? The counties overlapping this unit carry a strong history of trophy-class ram production, suggesting the habitat and genetics in this part of the state are capable of growing exceptional rams. That trophy history is shared across neighboring units within the same counties rather than being unique to 37B's exact boundaries, but it's a positive signal for any hunter who draws here. Specific scores aren't something hunters should fixate on — in a unit with this few tags issued, every mature ram encountered deserves serious consideration.
Is Unit 37B worth applying for? For hunters targeting desert bighorn sheep specifically, yes — the strong regional trophy history, 91% public land access, and consistently high success rates among the few hunters who do draw all support this as a quality long-term target. It requires patience; like nearly all Arizona desert sheep units, this is a multi-year (often multi-decade) point-building proposition rather than a quick draw.
What should hunters who just drew a 37B tag do first? Start scouting as early and as often as possible — the unit's size and terrain reward hunters who've put in the time before the season opens. Lean on Arizona Game and Fish's regional wildlife managers for current population and movement information, since the available survey data reflects only a single recent year and a modest sample size. Use mapping tools, like those available through HuntPilot, to study public land boundaries, elevation bands, and terrain features across the unit before committing to specific scouting areas.