mountain lion management unit · Montana Fish, Wildlife & Parks

Mountain Lion Management Unit 421

Montana, 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 Mountain Lion Management Unit 421

Mountain Lion Management Unit 421 is a mountain lion management unit in Montana, United States, set by Montana Fish, Wildlife & Parks. It covers about 2,100 km² (811 mi²). No town of the HuntGrid list lies inside it; the nearest is Great Falls, about 3.2 km from its edge.

HuntGrid draws its boundary from Montana Fish, Wildlife & Parks's data for the 2026 season. The agency uses this unit system for Cougar (mountain lion).

Unit code: 421
Area: 2,100 km²
Area (miles): 811 mi²
Boundaries: 2026

Public and protected land mapped inside it

HuntGrid's public land layers map about 251 km² of public or protected land inside it, 12% 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
Other or unnamed managers	189	9%
Forest Service Region 01 Northern	24	1%
Bureau of Land Management	18	under 1%
Other or Unknown Local Government	11	under 1%
Montana Fish, Wildlife & Parks, Region 4	10	under 1%
The Nature Conservancy	1.5	under 1%
The Nature Conservancy of Montana	1.5	under 1%
Unknown	0.8	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 Montana Fish, Wildlife & Parks's regulations:

Species	Dates	Details
Cougar (mountain lion)	Oct 24, 2026 to Nov 29, 2026	source
Cougar (mountain lion)	Dec 1, 2026 to May 25, 2027	source

The official regulations have the final word: check them before you hunt.

Official regulations: Montana Fish, Wildlife & Parks

Units around it

Next to it in the same unit system

Other hunting units that cover part of it

What HuntGrid shows for Mountain Lion Management Unit 421

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.

Open in HuntGrid

Questions

How big is Mountain Lion Management Unit 421?

About 2,100 km² (811 mi²), as HuntGrid maps Montana Fish, Wildlife & Parks's boundary.

How much public or protected land is in Mountain Lion Management Unit 421?

HuntGrid's public land layers map about 251 km² of public or protected land, 12% of the unit; the largest share is managed by Other or unnamed managers. Public land doesn't always mean you can hunt there.

Where are the season dates for Mountain Lion Management Unit 421?

This page lists 2 seasons a person has checked against Montana Fish, Wildlife & Parks's regulations; the official regulations have the final word.

Which units are next to Mountain Lion Management Unit 421?

In the same unit system: Mountain Lion Management Unit 280, Mountain Lion Management Unit 339, Mountain Lion Management Unit 404, Mountain Lion Management Unit 413, Mountain Lion Management Unit 422 and Mountain Lion Management Unit 445.

Sources

Unit boundary: Montana Fish, Wildlife & Parks. Licence: Montana Fish, Wildlife & Parks (published with a no-warranty disclaimer). Boundaries for the 2026 season.

HuntGrid isn't affiliated with Montana Fish, Wildlife & Parks. The official regulations and maps have the final word.