Honestly the way I seen wars done and how Sith to Jedi are slaughtered,
Darth Empyrean
the number might as well be closer to 100x, 4 million or even higher than that! Note that number is more or less for species inherently non-sensitive (No Yoda Planet, Omni, ect)
Not going to lie, the number of how many Force Sensitive people are in the galaxy is just a bull honkey statistic that I hate to a core passion. If you follow the Dark Horse comics, they were numerous at several points in history to where that number be closer to 1 in every billion people versus that massive set of numbers.
Depending if you want to follow Disney or Legends, you will get very different sets of data on how the population of Force Sensitives shrunk over time. After Darth Krayt and the Third Inconvenience (Seriously, it was barely a true purge, so many escaped this time around), you probably see till the creation of the website an explosion of population. Whether or not war occured between those time periods is up for debate (Omni comes to mind)
Honestly from all the collapsed governments of the last hundred years, people being born and killed from various people (Bryn'adul, The Maw, Sith Order, The Empire 7.0 (Patched Edition), ect.). I say the population of the Galaxy has at least increased to around 4-5x the amount of people from the last comic book. Not including new species the players has developed (Bryn'adul for Example) or the continuing expansion of returning characters that mostly come from the past several thousand years (Players, Netherworld Shennanigans, Omni Space Nonsense), 4 Million is a decent number to start with before reducing them to various organizations and players own small groups.
Pal Veda
for honesty sake, there is more Sith than there is traditional Jedi currently. The difference is how often Sith seem to fall versus the Jedi in combat or just straight up death/abandonment. I say nearly three to one though if you include Grey users, it may be three to two.
This is all my opinion though, you can take a cup to tea to it and put it over my head if you want.