Idaho No Gun Signs
Idaho Gun & Weapon Law
Are there places where I cannot carry a concealed weapon?
Yes. You may not carry a concealed weapon in a courthouse, juvenile detention facility, adult correctional facility, prison, jail, public school or private school. Federal law may prohibit you from carrying a weapon in places such as federal courthouses and airports. If you have any doubt, you should contact the government entity prior to carrying a weapon onto its premises.
Source
No Gun Signs
Your state allows you to choose from any of the gun signs shown below: