AJ,
It's very good to see you back!
I don't know about the population. I am thinking between 300-500 in the town proper. The one town assembly I saw was less than 300. We only had 50 kids in the government school and about 15 at the Egyptian school. If you look at the Google Earth pic of Jilib today, the old market-school-police-administrative area to the west, is empty, gone; but the town has grown maybe 15-20% to the north and east. Any idea what the population is today?