Imagine that humans put a space station in orbit around something further than 0.5 AU from Earth. So: not Earth, not the Moon, none of our Lagrange points -- none of the "easy" spots.
The station is the site of some arbitrary project that requires the direct involvement of many people who are all engaged in the undertaking; I'm thinking it's basically a corporate office building in space. These people are not astronauts or military, they're essentially office workers (anything from CERN to SDNY).
For obvious reasons, the people who work there must also live there. Since living in space is a hardship, let's assume that each person is there on some contract that dictates a tour of duty of something like 8 years, and that the company rotates staff through the station as necessary to maintain the maximum population. Nobody is allowed to perform a second tour.
The company that owns it is outrageously wealthy, and so wants to place as many qualified people on-site as can be induced to go. It can easily acquire any (real) supplies needed by the station, and ship them without depending on anyone else for launch services.
Given the technology that's reasonably available by 2030, what's the maximum occupancy of that station? (I.e. assume we start building it in 2030, not that it must be constructed, in-place, and inhabited by 2030.)
Ignore budgetary and legal constraints completely. Assume everyone who goes does so willingly.