Heh kamamura, its not like anyone is giving away sensitive information. And if they did I didn't force them to! They have every right to keep whatever they want a secret...
I've got a couple lands with 8k-10k population, Executor, I guess you just got unlucky. It is usually pretty tough to find high population lands for me; however, in one single player game I found two provinces with like 20k+ pop.