Deleted member 1487
Completely made up.
Though given that, as you say, around a third of the population surplus ended in Algeria, that would make an additional 3 million with Hörnlas estimates - which were rather conservative if I remember correctly. Now the thing with settler colonies is that once establish they'll attract more people (some kind of network effect in place here?). Having a large overpopulation problem at home will probably make the centralized bureaucracy in France manage emmigration - leading to even more emmigrants, some probably not entirely voluntary. Thus I'd expect that Algeria would attract more than just those 3 million of the population surplus, say 5 million. Additionally, Algeria attracted foreign emmigrants as well and should attract more ITTL, maybe making yet another million (there were AFAIK around 200.000 Italians in Tunesia IOTL).
So much to my desperate try to justify irrational numbers...
Anyway, my point is that France will likely try more to get colonies which are suitable settler colonies unlike IOTL, and that ITTL France will be quite successful in actually filling them with settlers, thus I'd French "dominions", and I expect Algeria to be one.
I'm not so sure about that large of immigration to Algeria, especially as violence is going to spring up with the natives and there has to be a reason for them to want to come over...things like jobs. What jobs could poor Frenchmen hold in Algeria? Farming, manufacturing, restaurants???