All cities with permanent gates have a population of about hundred million. And the one Oliver lives in, the Dragon city, including the people inside the gate has a population of 105 million people.
That's ten percent of the Federation population crammed into a city.
And for cities like these, all facilities needed for independent operation are present within the city gates itself. Thus the area it covers was also just as large.
Oliver rode the electric bike towards his destination, the red-light district, which covers a small area on the border of the inner city.
The main difference between the inner city and the outer city was the extremely tall skyscrapers littered across the area.
Most of these skyscrapers were owned by large corporations, guilds or even high ranked individuals. There were also military camps and administrative offices inside the inner city.
Some of the area inside the inner city was used for apartment complexes that housed wealthy families.