Illinois Gun Laws
Illinois residents wishing to purchase, possess or use firearms generally must have a Firearm Owner's Identification card. You can download the most current application from the Illinois State Police website Here. There are exceptions to this "must have FOID card to touch a gun/ammunition" rule, including one for individuals receiving firearm training instruction from a FOID cardholder, but generally speaking, you need to get one if you don't have one yet.
Your spouse / significant other / kids / grandkids should all have a FOID cards as well, to preclude issues of them borrowing your car with a gun and/or ammunition inside. Even a single .22 caliber rimfire cartridge rolling around under the seat can spell big trouble for your loved one should they run into the wrong police officer / sheriff's deputy.
Transporting Firearms in Illinois
Illinois does not have conventional carry of firearms as forty-nine other states do. We have something called "fanny pack carry" which is (please suppress your giggles) the carry of an unloaded, encased firearm by a FOID card holder. .
Don't take our word for it. Browse the Illinois State Police website's document library. Download the Illinois State Police "Transport Your Gun Legally" flyer. Print it out and put it in your fanny pack or other case where you transport your firearm.
Oh, and Illinois has a number of cities with local restrictions more stringent than the state-level regulations. Check the Illinois State Police website (here) (create link) for more information on local ordinances. (Ordinances listed as of January 2009: Ashmore, Aurora, Beecher, Bolingbrook, Calumet Park, Carbondale, Carol Stream, Casey, Channahon, Chicago, Cicero, Crest Hill, Elgin, Evanston, Flossmoor, Grayslake, Hazel Crest, Johnsburg, Loves Park, McHenry, Morton, Mount Prospect, New Lenox, Northbrook, Oak Park, O'Fallon, Orland Park, Peoria, Posen, Riverdale, Schaumburg, Shorewood, Skokie, Sleepy Hollow, Village of Mokena, Wheaton, Wilmette, Woodridge.)