That's a good and helpful list for us all, LizTail
Thank you for sharing it!
But, there's one thing to consider.... no, two things, at least.
How many of the npcs of the various races are friendly and how many are hostile scums? And how many are slaves, how many are living in godforsaken caves or in the Vivec sewers (popular place for khajiit thieves).
When I added the children, I wasn't looking for the exact numbers of various races in Morrowind, but rather for who coud be appropriate parents of the young ones. I didn't want to give bandits children, as we would then kill the parents (and the children would be hostile, too, yes?) And I didn't want to put children into miserable circumstances, when the players couldn't do much to help them, well, at least not within the CoM mod...
In general, the races - in percentage to the total number of npcs of that race - that tends to be more hostile and criminal (according to fight settings and to their dialog and where they show up) are orcs and khajiits. Slaves are, as we all know, mostly the beast races. Those that more often live together in communities - i.e. likely 'family surroundings' are dunmers of course, nords (Solstheim, Khuul, Dagon Fel), imperials (Pelagiad, Caldera) and then we have Tel Mora, where only female woodelves live.
I've always dreamt of seeing a fully populated altmer city somewhere - as they are such a 'magical' race and possibly rather 'snobbish' (thinking very high of themselves), it seems likely they would have a settlement for altmer mages somewhere.