New Jersey has the highest population density in the Northeast and the entire United States.

With more than 1,200 residents per square mile, New Jersey is the most densely inhabited state in the Northeast and the entire country. The state is home to around 9 million people despite having a limited land area. Its strategic location between two major metropolitan areas—New York City and Philadelphia—makes it a hub for businesses and commuters, which contributes significantly to its dense population. New Jersey is home to both quaint suburban communities and vibrant cities like Jersey City and Newark. Known as the "Garden State," it provides a distinctive fusion of natural beauty, cultural diversity, and metropolitan life.