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DataCygnus 4.5.24.6 “Corona Borealis” + WillpowerNov 23, 2026Tech tree 4.5.2 →

Best for pop growth in Stellaris 4.5.2

The biggest pop growth bonuses in Stellaris 4.5.2, from every civic, origin, ethic, species trait, ascension perk, tradition and technology in the files: Fanatic Xenophobe (ethic, +20%), Rapid Replicator (civic, +20%), Rapid Replicator (civic, +20%). Pop growth and assembly %: logistic growth, founder species growth, bonus growth and pop assembly, added.

Every pop growth bonus, ranked

  1. 1Fanatic XenophobeEthic · 2 pt · +20% Pop Growth (or Assembly) Speed+20%
  2. 1Rapid ReplicatorCivic · Regular empires · +20% Mechanical Pop Assembly Speed+20%
  3. 1Rapid ReplicatorCivic · Machine Intelligences · +20% Mechanical Pop Assembly Speed+20%
  4. 4Mass-ProducedTrait · 1 pt · +15% Mechanical Pop Assembly Speed+15%
  5. 4MechanistOrigin · +15% Mechanical Pop Assembly Speed+15%
  6. 6A New LifeTradition · Expansion · +10% Pop Growth (or Assembly) Speed+10%
  7. 6Cultivation DronesCivic · Hive Minds · +10% Pop Growth (or Assembly) Speed+10%
  8. 6Gardening ProtocolsCivic · Machine Intelligences · +10% Pop Growth (or Assembly) Speed+10%
  9. 6Genome MappingTier 1 society tech · +10% Pop Growth Speed+10%
  10. 6Geo-Engineering Inc.Civic · Megacorporations · +10% Pop Growth (or Assembly) Speed+10%
  11. 6Inward PerfectionCivic · Regular empires · +10% Pop Growth (or Assembly) Speed+10%
  12. 6Micro-ReplicatorsTier 2 engineering tech · +10% Mechanical Pop Assembly Speed+10%
  13. 6PlanetscapersCivic · Regular empires · +10% Pop Growth (or Assembly) Speed+10%
  14. 6Rapid BreedersTrait · 2 pt · +10% Pop Growth Speed+10%
  15. 6Refurbished ImplantsTrait · 1 pt · +10% Pop Growth Speed+10%
  16. 6Self-Assembling ComponentsTier 3 engineering tech · +10% Mechanical Pop Assembly Speed+10%
  17. 6Versatility: finisherTradition · Versatility · +10% Mechanical Pop Assembly Speed+10%
  18. 6XenophobeEthic · 1 pt · +10% Pop Growth (or Assembly) Speed+10%
  19. 19Metabolic RegulationTradition · Domestication · +5% Pop Growth Speed+5%

How it's counted: Pop growth and assembly %: logistic growth, founder species growth, bonus growth and pop assembly, added.

By kind

Best civics for pop growthBest origins for pop growthBest ethics for pop growthBest species traits for pop growthBest ascension perks for pop growthBest traditions for pop growthBest technologies for pop growth

Pop growth: questions

What gives the most pop growth in Stellaris 4.5.2?

By the game's own numbers: Fanatic Xenophobe (ethic, +20%); Rapid Replicator (civic, +20%); Rapid Replicator (civic, +20%). Pop growth and assembly %: logistic growth, founder species growth, bonus growth and pop assembly, added.

Are these tier lists?

No. They add up the game's own modifier values for the goal — what each thing gives, not how good it feels to play. Conditional effects and one-off events are not counted.

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