Where in the U.S. can you legally carry a concealed firearm? The answer is, pretty much everywhere. In 2013, Illinois became the 50th state to make it legal to carry a concealed firearm in public. 

The rules of concealed carry vary state-to-state, of course, and in some places, packing heat is much easier than in others. 

Unrestricted states: In six states — Alaska, Arizona, Kansas, Maine, Vermont and Wyoming — no permit at all is required to carry a concealed weapon in public, according to the Law Center to Prevent Gun Violence, a gun-control advocacy group.

"Shall issue" states: Thirty-five states have what is called a "shall issue" policy regarding concealed carry permits, meaning, according to an Illinois Bar Journal article regarding that state's policy, "the [state] must issue a license to an applicant who meets the requirements." Essentially, in a "shall issue" state, any applicant who meets state requirements (which may include safety trainings or a background check) gets to carry a concealed firearm.