Unit 36A is not the unit that gets the most ink in Coues deer conversation. That distinction typically goes to the trophy sky island units further east — the Chiricahuas, the Huachucas, the Santa Ritas in adjacent units. But what 36A offers that most of those units do not is a genuinely accessible entry point into southern Arizona Coues deer hunting with high deer densities, reasonable draw odds, and a landscape that rewards hunters willing to do the work and get off the roads.
This is the unit hunters use to build their Coues deer resume. It is also the unit where experienced glassers find mature bucks that the competition misses because most hunters in 36A are not hunting it the right way. Understanding what 36A is and how to hunt it correctly is the difference between a frustrating season in a crowded desert landscape and a deeply satisfying hunt on one of the more unique Coues deer landscapes in Arizona.
What Makes GMU 36A Unique
Unit 36A sits in the southwestern corner of Arizona’s sky island region south and west of Tucson. The unit is defined by a character that is distinctly different from the larger mountain range units elsewhere in southern Arizona. Rather than one dominant mountain range with a single high point the way units like the Chiricahuas or Huachucas are structured, 36A is a mosaic of smaller isolated mountain ranges and rolling desert terrain separated by broad grassland and desert scrub valleys.
The unit encompasses the Sierrita Mountains with Keystone Peak as the highest point at approximately 6,200 feet, the Cerro Colorado Mountains, the Las Guijas Mountains along the southern edge of the unit, and the surrounding desert grassland valleys and rolling foothills between these ranges. This fragmented landscape of multiple smaller ranges with Coues deer on every set of mountains and in lower densities throughout the flats between ranges is what gives 36A its distinct hunting character.
The elevation range across the unit runs from approximately 2,500 feet in the lower desert valley floors up to the 6,200 foot summit of Keystone Peak. The lower desert terrain is dominated by Sonoran Desert grassland and upper Sonoran desert scrub — saguaro, ocotillo, mesquite, palo verde, various cactus species, and the grasslands that characterize this elevation zone. Moving upslope the vegetation transitions through chaparral into oak woodland, with the higher reaches of the Sierrita range holding the oak and chaparral habitat that is classic Coues deer country.
The land ownership in 36A includes State Trust Land, Bureau of Land Management, the Buenos Aires National Wildlife Refuge, and some accessible private land. There is restricted access around active mining operations in the eastern portion of the unit that hunters need to be aware of and account for in their access planning. Understanding which specific areas are accessible before you drive out to hunt them is essential in 36A.
The Draw: Realistic Expectations for 36A
The unit 36 complex including 36A, 36B, and 36C carries some of the most accessible draw odds in southern Arizona’s Coues deer country. The tag numbers are higher than the more exclusive trophy units to the east and the draw odds reflect that generosity. Hunters with zero bonus points draw 36A tags regularly and hunters with a few points draw with very good consistency.
This accessibility is both the unit’s greatest strength and its primary consideration. Higher tag numbers mean more hunters in the field especially during the first season. The first rifle season in the unit 36 complex sees the most hunting pressure and hunters who draw first season tags in 36A should plan to get well away from road access points to find deer that have not been pushed.
The December seasons have dramatically fewer permits and more frequently allow access to better quality bucks that have survived the earlier season pressure. If trophy quality is your primary objective and you have the flexibility to apply for a December season hunt the reduced tag numbers and rut overlap make it the most productive window for mature buck hunting in 36A.
Always verify current draw odds, tag numbers, and season dates directly with AZGFD at azgfd.com before submitting your application. The 2026 fall deer draw deadline is June 2nd.
Terrain and Habitat: Where the Deer Live in 36A
The Sierrita Mountains
The Sierritas are the dominant mountain range in 36A and hold the highest Coues deer densities in the unit. The upper reaches of the range with their oak woodland and chaparral habitat are the core Coues deer country. The transition zone from the lower desert grassland into the oak brush and chaparral of the middle elevations is where deer movement is most predictable — feeding in the lower grassland edges in the mornings and evenings and bedding in the heavier oak and chaparral cover above.
The canyon systems that drain down through the Sierritas provide water, shade, and travel corridors that organize deer movement. Hunting the canyon heads and the benches where canyons open into small basin-like parks produces consistent deer sightings from hunters who take the time to reach them on foot.
The Cerro Colorado and Las Guijas Mountains
Along the southern edge of the unit the Cerro Colorado and Las Guijas mountains hold a distinctive mix of ocotillo, mesquite, oaks, and cactus that provides excellent Coues habitat in a terrain that is different from the classic sky island hunting of the larger ranges to the east. The lower and more broken character of these mountains means deer are more distributed across the landscape and the hunting style requires covering more ground to locate animals.
The Rolling Flats and Desert Grassland
One of 36A’s genuinely distinctive characteristics compared to most Coues units is that deer in this unit frequently occupy terrain that would be considered traditional mule deer habitat in other parts of the state. The grass and mesquite rolling washes and flats between the mountain ranges hold Coues deer at lower densities than the mountain slopes but in country that is far easier to access and glass than the steep canyon terrain. Hunters willing to glass the rolling desert grassland and mesquite wash country between the ranges will find deer that most other hunters are not looking for.
The Buenos Aires National Wildlife Refuge
The Buenos Aires National Wildlife Refuge within the unit boundary is open to hunting with the appropriate AZGFD tags and hunt permit. The refuge grassland terrain holds both Coues deer and javelina and provides a distinct hunting environment from the mountain range hunting that dominates most 36A strategy.
Access: Getting Into 36A
The primary access routes into 36A come from Interstate 19 to the west and Highways 82 and 83 to the east. The Sahuarita exit off I-19 provides access to the eastern portions of the unit and to the Santa Rita Experimental Range which while primarily known for the adjacent 34A unit boundary does provide access to hunting ground in this region. The Amado exit off I-19 gives access to the Sierrita Mountains from the west side.
Highway 83 south from Tucson toward Sonoita provides the eastern access corridor into the grassland and mountain terrain of the unit’s eastern portions. The communities of Sonoita and Patagonia serve as the closest service hubs for hunters working the eastern portions of the unit with fuel, food, and basic supplies. Tucson to the north is the primary supply base for most 36A hunters given its full range of services and relatively close proximity.
Four wheel drive capability is recommended for the forest and BLM roads within the unit especially after summer monsoon rains which can make dirt road access problematic. The unit is generally less physically demanding than the big sky island units to the east but the terrain varies considerably across the unit and some of the canyon and mountain country in the Sierritas is legitimately steep and requires physical effort to access properly.
Important access note: the Madera Canyon area within the adjacent unit contains closure zones where hunting is prohibited. While Madera Canyon itself is primarily in the 34A unit boundary hunters working near this area should verify current closure boundaries with the Coronado National Forest Nogales Ranger District before hunting to ensure they are within legal hunting areas. The closure area extends approximately a quarter mile from the canyon itself and hunting within the closure zone is prohibited.
Hunting Strategy: How to Kill Coues Deer in 36A
Glass Before You Walk
The fundamental rule of Coues deer hunting applies in 36A as fully as anywhere else in Arizona’s southern ranges. Find deer with optics before you move toward them. The brushy chaparral and oak terrain of the Sierrita Mountains holds deer that are extraordinarily difficult to locate without systematic glassing from elevated vantage points. Hunters who walk through 36A hoping to bump into a buck consistently find fewer deer than hunters who set up on ridges and work the surrounding country with quality binoculars for extended periods before moving.
The open desert grassland terrain between the mountain ranges is actually easier to glass effectively than the canyon country of the larger sky island units. Deer in the flats tend to be more visible at longer distances across the open terrain and a hunter willing to set up on a low ridge overlooking a broad grassland and mesquite valley can cover enormous amounts of country with quality optics.
Understand the Unique 36A Deer Distribution
Most Coues deer hunters arrive in southern Arizona expecting to hunt steep mountain canyon terrain exclusively. In 36A the deer distribution is more diffuse than in the big sky island units and a significant portion of the deer population uses the lower rolling desert grassland and foothill terrain that connects the isolated mountain ranges. Adjusting your mental model from pure canyon hunting to include the desert grassland transitions and rolling mesquite terrain will open up hunting opportunities that other hunters drive past on their way to the mountains.
The Rut Timing
The Coues deer rut in southern Arizona peaks from late December into January. The December seasons in the unit 36 complex overlap this rut activity and produce the highest proportion of mature buck sightings and harvest opportunities. During the pre-rut and rut period bucks that have been invisible through the early season become active during daylight hours and move more predictably across open terrain as they search for does.
The first and second rifle seasons occur before peak rut activity and hunting success during these periods depends more heavily on systematic glassing and finding concentrations of deer in their pre-rut habitat than on catching bucks in the open movement patterns that rut hunting produces.
Hunting Pressure Management
The first season in unit 36A sees significant hunting pressure given the relatively high tag numbers. Hunters who drive the primary access roads in the first few days of the season encounter the bulk of the competition. The consistent advice from experienced 36A hunters is identical to the advice that applies in every pressured Arizona unit — go further on foot than other hunters will go, hunt the terrain above and beyond the road access points, and be out of camp before first light so you reach your glassing position before other hunters are moving through the area.
The second and third seasons see progressively less pressure and the December season in the unit sees dramatically reduced hunting competition. For hunters who have flexibility in their application strategy the December season is worth prioritizing.
Gear for GMU 36A
The heat in 36A during the first rifle season can still be significant even in October and November at the lower elevations. The unit’s elevation range means the lower desert terrain and grassland areas can be warm during midday while the upper Sierrita slopes are cooler. Layer appropriately and plan your water needs carefully especially for the longer approaches into the canyon and mountain country.
Snake awareness is non-negotiable in 36A. The desert terrain throughout the unit holds a significant rattlesnake population during the early season hunting periods. Quality snake boots or gaiters are essential for the rocky canyon and chaparral terrain of the Sierrita Mountains and the desert scrub terrain throughout the unit.
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Quality optics are the most important gear investment for 36A. Binoculars on a tripod for extended glassing sessions and a spotting scope for confirming buck quality are standard equipment for any serious Coues deer hunter.
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A quality rangefinder is essential in the canyon and mountain terrain of 36A where distances across drainages are consistently misjudged.
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Use our free ballistics calculator to prepare your rifle for the elevation and shot distances of GMU 36A
Meat Care in 36A
Southern Arizona temperatures during the early rifle seasons require prompt and careful meat care after harvest. Field dress immediately, get the carcass into shade, and have your cooler staged and ready before your hunt. A quality cooler that holds ice for days is a necessity in the desert heat of 36A’s early seasons. The Yeti Tundra 65 is built for exactly this situation and will keep your meat in prime condition from the field to the processor.
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Use our wild game meat yield calculator to estimate how much Coues deer meat you will bring home from your 36A hunt
Frequently Asked Questions
How hard is it to draw a Coues deer tag in GMU 36A?
Unit 36A tags are among the most accessible draw tags in southern Arizona’s Coues deer country. Hunters with zero bonus points draw regularly and hunters with even a few points draw with good consistency. Verify current draw odds at azgfd.com before applying as tag numbers and odds change annually.
Is 36A a trophy unit?
Trophy class bucks are present in 36A but the unit is best understood as a high opportunity unit rather than a dedicated trophy unit. Hunters who put in the time and hunt the right country consistently encounter mature bucks. The December season gives hunters the best opportunity for a quality animal as reduced permit numbers and rut overlap produce more mature buck encounters.
How does 36A compare to 36B and 36C?
Unit 36A has more arid whitetail habitat and isolated mountainous regions with deer frequently using traditional mule deer terrain in the lower grassland and desert areas. Unit 36B in the adjacent unit is generally ranked first among the 36 sub-units for trophy potential followed by 36A and then 36C which has more restricted access and a smaller percentage of ideal Coues habitat. All three units offer good opportunity hunting with relatively accessible draw odds.
Do I need to be in excellent physical shape to hunt 36A?
36A is less physically demanding than the larger sky island units like the Chiricahuas or the Superstition Wilderness country of 24B but the canyon terrain in the Sierrita Mountains requires genuine physical effort to access properly. The rolling desert and grassland terrain between the mountain ranges is accessible without extreme physical demands. Reasonable fitness allows you to hunt the full range of the unit effectively.
What other species can I encounter in GMU 36A?
The unit holds javelina throughout the desert and chaparral terrain making combination hunts a realistic option depending on your tag timing. Mule deer are present in parts of the unit particularly in the lower desert terrain and the Santa Rita Experimental Range area. Mearns quail are present in the oak grassland terrain and are highly regarded by bird hunters in this region. Black bear and mountain lion round out the predator species present in the unit.
For a complete guide to Coues deer hunting in Arizona GMU 24B including tactics for tight canyon terrain check out our GMU 24B Coues deer guide.
For a complete guide to the Arizona deer draw including bonus point strategy and deadlines check out our Arizona deer draw guide.
For the best gear for Arizona desert hunting check out our complete Arizona gear guide.
For our complete Arizona hunting hub covering every species and season visit our Arizona hunting guide.
Use our wild game meat yield calculator to plan your harvest.
Use our free ballistics calculator to dial in your rifle before your hunt.
Disclosure: This post contains affiliate links to Amazon. If you purchase through these links I may earn a small commission at no additional cost to you. All gear mentioned is personally used or carefully researched and recommended.