It was a lively, bustling major city... of about 12 people and 1 chicken.
https://startrek.website/post/2744361

It was a lively, bustling major city... of about 12 people and 1 chicken. - Star Trek: Website
I always assumed that NPCs represented mroe than one actual citizen, because otherwise the world would become far to cluttered, and teh system requirements far to high to manage literally thousands of NPCs that exist for no reason.