Over on the SWTOR forums, a player going by the name Scorpienne has complied a report which features population estimates on the MMO’s servers. According to his estimates, some servers only have, on average, 344 players online at a given time.
His figures also show that the “Total Estimated Worldwide Population of all servers” for the last two weeks stood at 73,693 people logged in at a given time – not how many have logged in during the period. ”
The game has 214 active servers, and The Fatman server in the US, which seems to be the most popular, averaged 2006 players at any given time, while the least populated server Kaas City (PvE US East) had on average 410.
It’s worth noting though, that the figure averages “underestimate the peak population and overestimates the off-peak population.”