Re: DS9's population, there are various reports from the original show writer's bible that the station's complement would be about 200, mostly Bajoran. Starfleet's presence would number around fifty on top of that, plus whatever families are along for the ride. In later seasons the number had obviously ballooned, with references to DS9 being home to 900 Starfleet officers in the seventh season ("Field of Fire"), plus who knows how many Bajorans running the place or Klingons stationed there as part of Martok's entourage. At least we know that volumetrically, the station was hardly hurting for space.
Memory Alpha notes that the station had up to 2,000 crew (but no reference), with a carrying capacity of 7,000 (probably from the DS9 Technical Manual).
Mark
Memory Alpha notes that the station had up to 2,000 crew (but no reference), with a carrying capacity of 7,000 (probably from the DS9 Technical Manual).
Mark