What's that statistic where you could fit the entire population of the world, giving each person a small apartment, into a 40 mile by 40 mile by 40 mile cube or something?
It's documented that New Jersey has the highest population per square mile in the nation......and %60 of it is still rural, farmland,and grass plains and forest. Wharton State Forest in the Pine Barrens consists of 108,000 acres of relatively unspoiled wilderness, boasting a large resurgence of coyote. Go figure!
Don't know about a cube, but I did the math on this once. The entire population of the world could fit in Texas, with each person having about 1,300 square feet. When you factor in apartment buildings, where many people are sharing the same land area, the space per person is multiplied. That's why in Manhatten, with so many apartment buildings, the space per person is around 200-300 square feet.