Superintendent's Compendium - 2010
The purpose of the compendium is to provide the public and park employees with a document that lists the special designations, closures, public use limits, permit requirements and other restrictions imposed under the discretionary authority of the Superintendent.

For other helpful information, see Rules & Regulations and Things to Know Before You Come.

A Quick Guide to Gun Regulations in the Intermountain Region - NPS (pdf)
If you will be traveling with firearms through various parks in the Intermountain Region, you can review this brochure to learn more about how the change to the firearms law affects you.

FIREARMS IN PARKS

As of February 22, 2010, a new federal law allows people who can legally possess firearms under applicable federal, state, and local laws, to legally possess firearms in this park.

The Credit Card Accountability Responsibility and Disclosure Act of 2009, was enacted May 22, 2009 and will become effective February 22, 2010. Section 512 of this law; Protecting Americans from Violent Crimes, supersedes the uniform treatment of firearm possession in the national park system outside Alaska under the regulations found at 36 C.F.R. 2.4.

It is the responsibility of visitors to understand and comply with all applicable state, local, and federal firearms laws before entering this park. Yellowstone encompasses parts of Wyoming, Montana, and Idaho. Each state has different regulations and these are listed below.

Federal law also prohibits firearms in certain facilities in this park (such as visitor centers, government offices, etc.); those places are marked with signs at all public entrances. Hunting and discharge of firearms remain prohibited in Yellowstone National Park.

Firearms should not be considered a wildlife protection strategy. Bear spray and other safety precautions are the proven methods for preventing bear and other wildlife interactions.

WYOMING:

Open Carry Allowed
Handgun = Yes
Rifle = Yes
In Vehicle = Yes
Age Requirement = None

Concealed Carry Allowed - Permit Required for Non-Residents
Person = Yes
Vehicle = Yes
State Reciprocity = 23 states
Age Requirement = 21 years of age

Links to Wyoming State Firearms Information

Concealed Weapons

State Reciprocity

Relevant Wyoming Firearm Statutes

MONTANA:

Open Carry Allowed
Handgun = Yes
Rifle = Yes
In Vehicle = Yes
Age Requirement = 14

Concealed Carry Allowed - Permit Required
Person = Yes
Vehicle = Yes
State Reciprocity = 40 States
Age Requirement = 18

Links to Montana State Firearms Information

Concealed Weapons

State Reciprocity

Montana Firearm Statutes

IDAHO:

Open Carry
Handgun = Yes
Rifle = Yes
In Vehicle = Yes
Age Requirement = 18

Concealed Carry Allowed - Permit Required
Person = Yes
Vehicle = Yes
State Reciprocity = 46 States

Links to Idaho State Firearms Information

Concealed Weapons

State Reciprocity

Relevant Idaho Firearm Statutes