What is jaywalking?
It is the act of walking across a road/street at an area that is not a cross walk. Jaywalking is the act of walking across the street outside of a crosswalk.
Yes, in fact, jaywalking is illegal almost everywhere in the U.S. simply because it is dangerous. Obviously, it is very hard to go to jail for jaywalking and also very hard to get caught while doing it. I don't even think you get a ticket for jaywalking, just a warning. Anyway, if you do jaywalk (which almost everyone does) be safe and carful.