Spaceports are prominent trade outposts, supervising trade between countries on Earth and their extraterrestrial colonies. While much of the population is the crew manning them, there usually is a significant citizen population on board too.
Notable Spaceports[]
New New York (US)[]
New New York is a prominent spaceport, supervising trade between the United States of America, the Apollo Territory on the Moon/Luna, and American Mars. A total of 1.5 Million people lived there by 2400. It was set up in the 22nd Century.