GMU · Arizona Game and Fish Department
Unit 40B
Arizona, United States
The map opens on this unit. Turn on Hunting units in Layers to see its boundary with public land, your pins and the forecast.
About Unit 40B
Unit 40B is a GMU in Arizona, United States, set by Arizona Game and Fish Department. It covers about 8,922 km² (3,445 mi²). Towns inside it include Yuma, San Luis, Somerton and Wellton.
HuntGrid draws its boundary from Arizona Game and Fish Department's data for the 2026 season. The agency's regulations say which species and seasons use it.
- Unit code
- 40B
- Area
- 8,922 km²
- Area (miles)
- 3,445 mi²
- Boundaries
- 2026
Public and protected land mapped inside it
HuntGrid's public land layers map about 2,382 km² of public or protected land inside it, 27% of the unit. Some protected land is privately owned (a conservation group's, for one). By manager, as the source names it:
| Manager | km² | Share |
|---|---|---|
| National Park Service | 1,331 | 15% |
| Bureau of Land Management | 597 | 7% |
| Unknown | 331 | 4% |
| Unknown | 121 | 1% |
| City of Yuma | 1.1 | under 1% |
| CABEZA PRIETA NATIONAL WILDLIFE REFUGE | 0.9 | under 1% |
| Cabeza Prieta National Wildlife Refuge | 0.9 | under 1% |
| Arizona State Game and Fish Department | 0.7 | under 1% |
| Other or unnamed managers | 0.4 | under 1% |
Boundaries are approximate and aren't legal descriptions. Public land doesn't always mean you can hunt there: check your local regulations and posted signs.
Public land: U.S. Geological Survey (USGS) Gap Analysis Project (GAP), 2025, Protected Areas Database of the United States (PAD-US) 4.1
Seasons and regulations
Seasons for this unit that a person has checked against Arizona Game and Fish Department's regulations:
| Species | Dates | Details |
|---|---|---|
| Collared peccary (javelina) | Jan 1, 2026 to Dec 31, 2026 | 39 without three wildlife areas, 40B outside Pima County, 43B outside refuges source |
| Mule deer | Nov 6, 2026 to Nov 15, 2026 | antlered, draw, 39 excludes Buckeye Hills and Estrella Mountain regional parks source |
| White-tailed deer | Nov 6, 2026 to Nov 15, 2026 | antlered, draw, 39 excludes Buckeye Hills and Estrella Mountain regional parks source |
| Bighorn sheep | Nov 13, 2026 to Dec 3, 2026 | males, draw, Tinajas Altas Mountains south of Cipriano Pass only source |
| Bighorn sheep | Dec 1, 2026 to Dec 31, 2026 | males, draw, Mohawk and Copper Mountains only source |
| Bighorn sheep | Dec 1, 2026 to Dec 31, 2026 | males, draw, Gila Mountains north of Cipriano Pass only source |
| Bighorn sheep | Dec 4, 2026 to Dec 31, 2026 | males, draw, Tinajas Altas Mountains south of Cipriano Pass only source |
| Mule deer | Dec 11, 2026 to Dec 31, 2026 | antlered, archery source |
| Mule deer | Dec 11, 2026 to Dec 31, 2026 | antlered, muzzleloader, draw, excluding Buckeye Hills, Skyline, Estrella Mountain and White Tank Mountain regional parks source |
| White-tailed deer | Dec 11, 2026 to Dec 31, 2026 | antlered, muzzleloader, draw, excluding Buckeye Hills, Skyline, Estrella Mountain and White Tank Mountain regional parks source |
| White-tailed deer | Dec 11, 2026 to Dec 31, 2026 | antlered, archery source |
| Collared peccary (javelina) | Jan 1, 2027 to Jan 21, 2027 | archery, draw, national wildlife refuges excluded source |
| Collared peccary (javelina) | Jan 1, 2027 to Dec 31, 2027 | 39 without three wildlife areas, 40B outside Pima County, 43B outside refuges source |
| Mule deer | Jan 1, 2027 to Jan 31, 2027 | antlered, archery source |
| White-tailed deer | Jan 1, 2027 to Jan 31, 2027 | antlered, archery source |
The official regulations have the final word: check them before you hunt.
Units around it
Next to it in the same unit system
What HuntGrid shows for Unit 40B
- Its boundary on the map; tap inside it for the unit's card with the agency's regulations link.
- Public land and the other hunting units in the same view, each with its source.
- Season dates once a person has checked them, and legal shooting hours where the rule is checked.
- Hourly wind with a scent cone for every stand, and official weather alerts.
- Offline maps: download the area and use the map, your pins and the forecast with no signal.
Questions
How big is Unit 40B (GMU)?
About 8,922 km² (3,445 mi²), as HuntGrid maps Arizona Game and Fish Department's boundary.
How much public or protected land is in Unit 40B?
HuntGrid's public land layers map about 2,382 km² of public or protected land, 27% of the unit; the largest share is managed by National Park Service. Public land doesn't always mean you can hunt there.
Where are the season dates for Unit 40B?
This page lists 15 seasons a person has checked against Arizona Game and Fish Department's regulations; the official regulations have the final word.
Which units are next to Unit 40B?
In the same unit system: Unit 39, Unit 40A, Unit 41, Unit 43B, Unit 46A and Unit 46B.
More on huntgrid.net
Sources
Unit boundary: Arizona Game and Fish Department. Boundaries for the 2026 season.
HuntGrid isn't affiliated with Arizona Game and Fish Department. The official regulations and maps have the final word.