What is your definition of "affordable"? New Jersey is fairly expensive, especially in areas close to NYC and Philly. In a shock to many people, Jersey City rents are now the highest in the entire country at an average of $5,500 per month.

You should probably re-post this question with details about how much you are looking to spend, whether you want to buy or rent, and how big a place you need. You will get more meaningful answers that way.