Underhill Population

Population density varies on Underhill. On Jörmungandr, how many people are on an individual island is dependent on who runs the island. If it's one of the Council of Elven Lords, then it's probably one of the six major islands, and has room for at least one large town and a number of scattered villages, along with some independent holdings. A smaller island may only be large enough for its ruler's home, a village of humans, and enough land to give them some semblance of sustainability.

On the moon, things are still very much the wild west, and there are very few large towns, mostly clustered around the spaceports and water deposits. Most of the people are spread out, settling in after the terraforming is done, or else still working on finishing up terraforming. Think maybe two hundred people in a region using a town as a hub for supplies and transportation.

Down on the planet the Dwarves have large cities underground that sometimes spill out into the mountain slopes. Camps can be far flung and deeper down, but if there's a smaller settlement, it means that someone has found a new vein of ore and either split from their kingdom or is under the authority of one of the kings. Their largest cities may have a hundred thousand or so people in them (Birth rate is higher for the Dwarves, but their death rate in the mines and with the Drow preying on them from below, they don't get a lot of chance to outgrow themselves.) A number of Dwarves ended up moving to the moon, or to the desert planet or the ice planet. Others go out to space, and use constructs knowns as whales as transport and cargo haulers for asteroid mining.

The Orks are the most spread out over the planets surface. There is a city, of sorts, near the Grove, but due to the nature of the place, it's all tree houses and forest trails, not streets and buildings. Orks may have towns in some places, be mostly nomadic in others,