game management unit · Washington Department of Fish and Wildlife
GMU 633 Mason
Washington, 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 GMU 633 Mason
GMU 633 Mason is a game management unit in Washington, United States, set by Washington Department of Fish and Wildlife. It covers about 916 km² (354 mi²). The town of Shelton is inside it.
HuntGrid draws its boundary from Washington Department of Fish and Wildlife's data for the 2026 season. The agency's regulations say which species and seasons use it.
- Unit code
- 633
- Area
- 916 km²
- Area (miles)
- 354 mi²
- Boundaries
- 2026
Public and protected land mapped inside it
HuntGrid's public land layers map about 122 km² of public or protected land inside it, 13% 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 |
|---|---|---|
| Unknown | 119 | 13% |
| Washington Department of Fish & Wildlife | 1.7 | under 1% |
| City of Shelton | 0.8 | under 1% |
| Capitol Land Trust | 0.8 | under 1% |
| Washington State Parks & Recreation Commission | 0.6 | under 1% |
| MASON COUNTY | 0.5 | under 1% |
| Mason County, WA | 0.1 | under 1% |
| County of Mason | 0.1 | under 1% |
| Other or unnamed managers | 0.2 | 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 Washington Department of Fish and Wildlife's regulations:
| Species | Dates | Details |
|---|---|---|
| Cougar (mountain lion) | Sep 1, 2026 to Mar 31, 2027 | source |
| Black-tailed deer | Oct 17, 2026 to Nov 1, 2026 | antlered source |
| Elk (wapiti) | Nov 7, 2026 to Nov 18, 2026 | antlered source |
| Black-tailed deer | Nov 19, 2026 to Nov 22, 2026 | antlered source |
| Black-tailed deer | Nov 25, 2026 to Dec 15, 2026 | muzzleloader source |
The official regulations have the final word: check them before you hunt.
Official regulations: Washington Department of Fish and Wildlife
Units around it
Next to it in the same unit system
Other hunting units that cover part of it
What HuntGrid shows for GMU 633 Mason
- 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 GMU 633 Mason (game management unit)?
About 916 km² (354 mi²), as HuntGrid maps Washington Department of Fish and Wildlife's boundary.
How much public or protected land is in GMU 633 Mason?
HuntGrid's public land layers map about 122 km² of public or protected land, 13% of the unit; the largest share is managed by Unknown. Public land doesn't always mean you can hunt there.
Where are the season dates for GMU 633 Mason?
This page lists 5 seasons a person has checked against Washington Department of Fish and Wildlife's regulations; the official regulations have the final word.
Which units are next to GMU 633 Mason?
In the same unit system: GMU 621 Olympic, GMU 624 Coyle, GMU 627 Kitsap, GMU 636 Skokomish, GMU 651 Satsop and GMU 666 Deschutes.
More on huntgrid.net
Sources
Unit boundary: Washington Department of Fish and Wildlife. Boundaries for the 2026 season.
HuntGrid isn't affiliated with Washington Department of Fish and Wildlife. The official regulations and maps have the final word.