There's so much to see and do in New Jersey, and there's nothing like diving straight into your activities with your very own rental car. Here's some basic info to get you started. You can't truly say that you've explored every nook and cranny of United States of America without checking out the state of New Jersey. While you're here, don't forget to stop by its capital, Trenton. This bustling destination is home to roughly 84,200 people.