Does anyone know a good "base minimum" population for a sustainable medeival city?

[Azélor]

80 000 000 people in Europe was in the begining of the 14th century but the population was at it's peak. With the soil having very good yeild for the era. Things then started to change because the climate got colder and it's population started to dwindle. So actually, 80 millions was too high for Europe.

The population of Norway probably topped around 200 000 people at the time for 150 000 square miles. Wich seems to fit the north and tundra thing. Sweden is more populated but it's climate is probably too hot to be a good example.
So you would end up with something like 300 000 or 400 000 people for the area and not 3 300 000. The density is in fact around 1.

By chilly mountains I think something like the Ural or the Alps if you want a more frendly surrounding climate. It would be around 600 000 for 16 000 square miles if you take Switzerland as example. 10 millions or so. Density 37,5 wich seems pretty high but not all the country is covered by mountains. If you want just mountains, Tajikistan is another example but the numbers are hard to find.

Lush highland: Like Ireland 33 000 square miles with 1.3 millions people or so. 11 millions (density 39)

Enchanted Magical Growth Forest (120 density) @ 310,000 sq miles. I'm not sure this make sense since it's mostly covered by forest wich are usually unsettled by humans. The population should much lower than that unless there is a magical explanation. Now it's 3 times the density of Switzerland wich was already high. The density should be around 5 or 10 maybe. Maybe around 2 millions

Plains & Massive Grasslands & Fields aka Russia or Ukraine. Or the Grand Duchy of Lithuania to nbe more precise. It had a population of 0,7 millions for 135 000 square miles. density 5. It seems a little low but it depend of the climate. 1,6 millions

Desert region, but with an enormous and thriving oasis and set of islands. Apparently Egypt had about 3 millions people at the time for 387 000 square miles wich give a density of 8. It make about 4 millions.

Jungle: the density is even lower than the forest since there is no humans cities but only villages scatered. The desity should be around 1 or 2 I think. Roughly 400 000 people.

Lava-like region. That's not an earth-like climate so I guess it's possible. 6 millions



So to sum up: it's something like 35,3 millions people. It's not exact but your problem is that some zone are too densely populated mountains, jungle and forest have a very small density as it's generally unsettled. And as for the plains, it depend of the climate so it might be higher. In general, the drier and colder the climate, the lower the density will be.

I hope that I have been able to help you figure out the numbers.

[RonnyRulz]

Alright, I have actually already decided what % of the population will be each of the 8 "factions" in each of the 8 regions. I tried to keep it balanced, with the rarer races/creatures being significantly less common, and the masses like human or insectoids to be the highest. I will use the current populations for each region, then figure out the populations for each race. Then try to boost the ones who would thrive better in areas (imps for lava, insectoids for being non-human breeders).

I spent a few hours perfectly honing the percentages after deciding on a permanent population density rate, unique to all races. I greatly increased the tundra density and hellfire, to even out the regions.


The Frozen Expanse
Population: 3.5 million
Tundra Density: 6

I decided to increase the Density to 6, to represent factions hugging less harsh areas of the expanse.

Zombie 1,425,600
Mindflayer 742,500
Bear-People 501,600
Barbarians 356,400
Troll 158,400
Golem 138,600
Ice Spirit 115,500
Ice Giant 33,000
Frost Dragon 8,250

Zombies are basic undead. This is how the zombies differ from the undead. They're mostly (rotten) meat bodies; ranging from traditional zombie or Warcraft undead, to mummy type husks. Skeletons are just bones, Wraiths are ethereal entities, Constructs are frankenstein-like living mortals, and Vampires are immortal mystical humans. They compose the vast almsot 1/3rd the population of the tundra and taiga.

The Mindflayers, may or may not end up being actual mindflayers. Instead, this is the old race before deciding on some design changes. They will be coldwater creatures who are the evil counter to Merfolk. I have yet to determine if they will be octopus/squid-like a mindflayer or simply a more "bad boy" or slightly creepier version of merfolk. Since they live in coldwater, they thrive on special coldwater farms which cause them to thrive in such a harsh environment.

The Bear-People's thick coats help them survive better than the barbarians, as well as living in less harsh part of the expanse. Barbarians live in a harsh part, but reside on the other side of the mountains.

Elementals, Giants, and Dragons have a universal density, which is rarely adjusted. The populations vary in region. With the exception of the hills, the Ice Spirits and Frost Giants are extremely common for this region compared to the other 6.

The Frozen Expanse is home to twice as many ice dragons as any other region's dragon type. It is an extremely dangerous region, if not for the high number of elemental spirits, giants, and dragons- then for the frigid temperatures and scarcity of food.

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The Iron Kingdom
Population: 8 million
Mountainous Density: 30

Goblin 2,025,000
The Academy 1,944,000
Dwarf 1,701,000
High Elf 1,134,000
Forged 1,080,000
Construct 54,000
Earth Spirit 54,000
Rock Giant 12,150
Rock Dragon 1,350

Goblins are not very powerful, but their numbers make them a force large enough to pose a big threat to the adjacent Lush Highlands.

The Academy is an almost industrialized faction. The Academy is a type of human faction. A mix of steampunk, inventions, frankenstein-esque style, and the world's most talented wizards and alchemists. "The Academy" itself is a big city which is home to humans, dwarves, high elves, forged, and even earth spirits and a few rock giants.

The High Elves rival in population to their distance relatives: The Dark Elves.

The Forged are very numerous, due to the magical stone and metals which are so abundant in The Iron Kingdom. The Alliance between The Academy and the Dwarves' Iron Fortress created the Forged.


----------------------------

The Lush Highlands
Population: 10.8 million
Hills/Farmland Density: 40

Kwaynos 3,192,000
Gnoll 2,016,000
Half Elf 1,792,000
Halfling 1,456,000
Wraith 1,120,000
Fox-People 1,064,000
Scarecrow 112,000
Hill Giant 39,900
Dragons 4,200

The second largest faction are the Kwaynosian humans of this region.

Their enemies, the Gnolls, although 2/3rds the population- still pose an enormous threat to Kwaynos.

Half Elves are quite populated, due to the Wood Elves, High Elves, and Dark Elves who are not far off from this enormously populated region.

The Wraiths have a population density of 50, which is the largest of all factions. This is due to both having the default 40 of this region, with the +10 density bonus of being undead. Although the Lush Highlands are very fertile, they can also be very spooky with wraiths and spirits inhabiting Scarecrows throughout the region's farmland.


----------------------------

The Enchanted Realm
Population: 7.2 million
Magical Forest Density: 20

I raised the density by 20, due to the magical nature of this region. I felt it should remain low (half the Lush Highlands) but raised due to the massive adjustment I did to the Tundra/Hellfire's minimums.

Wood Elf 1,937,500
Gnome 1,860,000
The Druids 1,550,000
Fae 930,000
Werewolf 496,000
Satyr 310,000
Animal Shapeshifter 124,000
Treant 27,900
Fae Dragon 3,100


Wood Elves and Fae both have a +5 density bonus for their growth magic. The Druid human faction is unable to match such powerful magic, but are still competent enough in this magic to have the normal 20 density.

----------------------------

The Trader's Paradise
Population: 8.4 million
Oasis & Coastal Density: 20

Ratling 2,320,000
The Pirates 2,240,000
Merfolk 1,440,000
Dark Elf 1,120,000
Bird-People 1,040,000
Vampire 120,000
Genie (Air Spirit) 72,000
Air Giant 18,000
Sea Serpent 8,000


I raised this to 20, as this is an extremely water-based region. The aquatic life in the region is rich and delicious. This was suppose to be the most populated region of all the 8, but it was unrealistic. Instead, I have fertile lands surrounded by an extremely successful fishing and trading economy. I gave its desert density bonuses for the high amount of Trade, and the fact most of the populous is nearby both the Lush Highlands and The Enchanted Forest. Sea Serpents are high in number just like the harvested seafood.

Air Spirits & Air Giants are extremely common, as a large portion of this region is empty desert, where they roam.



----------------------------

The Eternal Fields
Population: 8.5 million
Plains & Grassland Density: 25

Skeleton 2,256,800
The Church 1,395,000
Orc 1,317,500
Froglok 1,209,000
Cat-People 968,750
Centaur 775,000
Ogres 503,750
Angel (Light Spirit) 62,000
Undead Dragon 3,100


I wanted this to be far more like the States than Russia or the Ukraine. Assuming that those were a lot colder. This is also home to the largest collection of Undead: The Skeletons, Skeletal Giants, and Bone Dragons.

Bordering The Eternal Fields and The Hellfire Domain, is a great wall made by The Angels, guarded by the human Church faction.


----------------------------

The Primal Lands
Population: 7.5 million
Jungle Density: 13

Most of the creatures who live here, are subhuman and survive better in the jungle. This land is also prehistoric, so the plant life and growth is quite different than normal.

Insectoid 3,968,000
Tribal Humans 1,092,000
Ape-People 936,000
Lizardman 717,600
Spiderpeople 364,000
Naga 260,000
Plant Spirits 160,000
Cyclops 20,000
Dragon Dinosaur 4,000

This region is composed almost entirely of Insectoids in their city, "The Mind Hive". The Insectoids are by far the world's largest faction, matched only by the Kwaynosian humans, who are 1 million less in population. The density of the insectoids is incredibly how, due to enormous bonuses due to endless breeding.


----------------------------

The Hellfire Domain
Population: 3.4 million
Hellfire Density: 10

The Hellfire is a volcanic region, with rivers of lava in the center, hot springs to the north, mountains to the east which border the plains and jungle, and to the west the land is cooled off by the ocean.

Imp 1,080,000
Maniacs 840,000
Drake 660,000
Gargoyle 330,000
Demon 240,000
Minotaur 120,000
Fire Spirit 60,000
Fire Giant 12,000
Fire Dragon 3,000

The Imps thrive in the lava and volcanoes, while the City of Madness is home to the maniacs- among other demonic evils. The section they live in is surrounded by water and further away from the volcanoes, making it a more livable environment.

To the east of the wall the angels built, are mountains where rivers flow into, forming the Minotaur's hot springs.