I'll remain a soldier until the war is won.
We can Speculate about this all day.
The Official number is put at somewhere around 200 Million.
But as stated its impossible to count just how many refugees there are.
I imagine much of Humanity fled, hopeing for some chance of survival.
There are so many that are probobly unnacounted for.
-Rebels, still in hideing.
-Refugees, scattered amongst the Stars.
-Fleet Admiral Cole, and his band of Survivors that are currently unnacounted for.
-The Ship Spirit Of Fire, Lost trying to find its way back home.
I think for many, many years during the Post-War Era and mabey even a little beyond, We will conntinue to find groups of Survivors, both small and large in number, amongst the Stars.
Much like how today we keep finding pockets of Japanese soldiers from WW2, that dont even know the War has been over for 70 years almost now.