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In Cordelia, unlike other really big cities, such as new york which has population of 8. 406 million people, Cordelia won't be that big city. And considering that it is floating city, the weight of it should be really light. 

So in Cordelia, the entire resident population is 10, 000 people on downtown, which is main city of Cordelia. For those people, there are entirely 4, 000 houses, all of them villas, on the downtown. And there will be 15 buildings for working offices or other purposes for residents.

For non-living people, or travelers, 2, 000 people are allowed per section in maximum (except 2 economical resources section). So 2, 000 times (8 - 2) = 12, 000 people. And there are 50 hotels in Cordelia for tourists (200 allowed per one in maximum). 

In total, there can be 22, 000 people in maximum everyday. And there are entirely 4, 065 buildings (includes houses, villas, buildings) in Cordelia