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Population growth in Stellaris 4.0
Hi, I can't seem to get how to actually increase my population. It doesn't matter if I colonize 3 planets at the start or prioritizing my capital planet for the first 50 years - my species' growth seems to completely stall around 7,0k - 7,5k total population. Even tried to colonize 8 planets (all suitable for my species, all with at least 80% of habitability) - same result. 7.5k population at max. My people just refuse to breed. I have higher than 50% stability on a planet, no criminal activity, more than enough houses, more than sufficient amenities, plenty of available jobs across my planets, yet no one wants to make little alien childrens. Am I playing Stellaris or South Korean government simulator? Other species literally have 17k pops in less than 80 years of the game while I'm left with unfilled jobs. What am I doing wrong? I'm playing Gross Admiral btw.
Originally posted by corisai:
Originally posted by Renegade 7:
How come clankers and other organics have 17k pops while I'm stuck in 7k for 70 years? 2230 I reach 7k pops. 2300 I reach 7.2 - 7.5k pops at max and get stuck.
So you're not having a source of population assembly, only natural growth (without any bonuses to it). Rules of natural growth - It's all about exploiting Logistic Growth bonus.

For triggering max value of it you need:
1) Planet should have population of at least 2k of your people.
2) Your planet has twice as much capacity as pops. I don't know if dev fixed capacity calculations in tooltips but if you don't have crazy housing reduction bonuses (you don't) then as rule of thumb - free housing should be at least equal to existing pops (a bit overkill).
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empire type, civics, species traits might help for people to give advice.
They're MIGRATING together with growing up. That's why it look stale for you.

And @Meewec correct - to give proper adviced how to increase pop growth we need to know what type of empire you're playing. Generic living? Hive? Machines? What ascension you're doing?
Originally posted by Meewec:
empire type, civics, species traits might help for people to give advice.
Currently RP'ing Turian Hierarchy from Mass Effect.
Fanatic Militarist + Authoritarian
Oligarchic
Citizen Service + Meritocracy
Resilient + Traditional + Strong + Conservationist + Psychological Infertility (-30% Pop Growth during WAR and CRISIS, but I'M NOT IN A WAR NOR CRISIS STARTED)
Originally posted by corisai:
They're MIGRATING together with growing up. That's why it look stale for you.

And @Meewec correct - to give proper adviced how to increase pop growth we need to know what type of empire you're playing. Generic living? Hive? Machines? What ascension you're doing?
How come clankers and other organics have 17k pops while I'm stuck with 7k for 70 years? By 2230 I reach 7k pops. By 2300 I reach 7.2 - 7.5k pops at max and get stuck.
The author of this thread has indicated that this post answers the original topic.
Originally posted by Renegade 7:
How come clankers and other organics have 17k pops while I'm stuck in 7k for 70 years? 2230 I reach 7k pops. 2300 I reach 7.2 - 7.5k pops at max and get stuck.
So you're not having a source of population assembly, only natural growth (without any bonuses to it). Rules of natural growth - It's all about exploiting Logistic Growth bonus.

For triggering max value of it you need:
1) Planet should have population of at least 2k of your people.
2) Your planet has twice as much capacity as pops. I don't know if dev fixed capacity calculations in tooltips but if you don't have crazy housing reduction bonuses (you don't) then as rule of thumb - free housing should be at least equal to existing pops (a bit overkill).
How to check your actual Logistic Growth bonus (if you're playing with default game settings it should be 5.0):
Look on tooltip, it show 1.0+4.0. That's equal to 5 - I'm getting a full bonus.

https://steamcommunity.com/sharedfiles/filedetails/?id=3514214547
Thanks. So I need to forcefully move my pops from capital to the new colony? With a hope that my economy won't crash after.
Originally posted by Renegade 7:
Thanks. So I need to forcefully move my pops from capital to the new colony? With a hope that my economy won't crash after.
I would say ideally you shouldn't rush for making multiple new colonies in early game as it WILL kill your growth. But yes, you definitely need to fix your growth ASAP.
Originally posted by corisai:
For triggering max value of it you need:
1) Planet should have population of at least 2k of your people.
2) Your planet has twice as much capacity as pops. I don't know if dev fixed capacity calculations in tooltips but if you don't have crazy housing reduction bonuses (you don't) then as rule of thumb - free housing should be at least equal to existing pops (a bit overkill).

Man I remember when the housing usage negative was a freebie. Not anymore looks like. Thanks for the explanation. This update is still nowhere near as overwhelming as the Le Guin update was, but this was the bit I was missing, to really make it click.
Originally posted by corisai:
Originally posted by Renegade 7:
Thanks. So I need to forcefully move my pops from capital to the new colony? With a hope that my economy won't crash after.
I would say ideally you shouldn't rush for making multiple new colonies in early game as it WILL kill your growth. But yes, you definitely need to fix your growth ASAP.
Quite the reverse. Colonise everything and control your migration by means of jobs. Growth by assembly is entirely possible VERY early even as organics, since one of the first things you should aim for on the Society tree is Cloning. Why? Because that let's you throw down some vats on every single planet instead of waiting for one specific ascension to provide them.

Absolutely go a-conquering to speed up pure pop numbers growth, but you're only nerfing yourself if you leave planets uninhabited. Subject, yes, to certain limitations based on how good they are for your species. Even low-habitability worlds may be OK if you've got the right supplementary modifiers, whereas some mid-habitability worlds are less appealing for the same reason.
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Date Posted: Jul 16, 2025 @ 2:21am
Posts: 10