Weapon laws (Title 18, Ch. 33 IC)
Idaho does not have purchase permits, gun registration, or gun-owner licensing. There are no limits on magazine capacity or weapon types. There is no waiting period mandated for firearm purchases and private gun sales are legal. Concealed weapon licenses are shall issue, no license is required to carry a concealed firearm outside of city limits, no license is needed for any Idaho resident (even within city limits), and open carry is legal. Permitless concealed carry is for Idaho residents only.
A licensed concealed carrier may not carry a concealed firearm in a courthouse, detention center/jail (18-3302C). This does not apply to open carry. You cannot bring a firearm into a prison. 18-2510
No guns signs
'No guns' signs on private property do not have the force of law. A refusal to leave or disarm when requested would be trespassing. Hotels may legally prevent you from bringing in a firearm. 39-1805 and 39-1809
You may carry a firearm in an establishment that serves alcohol. You may not carry a concealed firearm while intoxicated. 18-3302B
You may not possess a firearm in any building, stadium or other structure on school grounds while being used for school purposes or riding school transportation. A firearm in a vehicle in the parking lot is okay. 18-3302D
Campus carry (college/university)
It is legal for an enhanced concealed license holder (18-3302K) or retired law enforcement officer (18-3302H) to carry a concealed firearm on a college or university campus except in dorms or public entertainment facilities.
Employee protections/parking lots
Employers are given immunity from liability from any claim for damages that may arise involving a firearm stored in an employee's vehicle. The intent of this section was to remove liability as an excuse for employers to prohibit firearms in private vehicles. 5-341
You may carry a loaded firearm in your vehicle as long as it is not concealed. If it is concealed, it must be unloaded. Concealed carry is not regulated outside of city limits. 18-3302(4)
You may not carry a firearm in any airport sterile area located beyond the TSA security checkpoints or on aircraft (excluding baggage). Otherwise, Idaho has no law prohibiting open or concealed carry within the other public areas of airports. 18-7503
It is legal to carry a loaded firearm, concealed or unconcealed, in your own home, in your place of business, on your own property, or on someone else's property with their permission without a concealed weapon license. 18-3302(3)
The Idaho health care exchange (Obamacare) cannot ask you questions about firearms. This does not apply to regular doctors or if you are being evaluated if you a threat to yourself or others. 41-6105(h)
'Constitutional Carry' (permitless concealed carry)
ffective July 1, 2019, permittless concealed carry in cities and towns now applies to all adults 18 and over (previously it was limited to 21 and older). This bill discriminates against non-residents and is not true constitutional carry, which recognizes that the government cannot regulate who can carry a firearm and in what manner. Vermont by contrast, has never had a law that regulates the carry of firearms, which is true constitutional carry. You must be an Idaho resident for this to apply.
Nonetheless, this is an important victory for Idahoans and a step towards Vermont-style constitutional carry. Adult Idaho residents may: