Town to City Population Growth Guide

Population Growth Mechanics

Population grows when: housing happiness is above 60%, jobs are available for new residents, and essential services (water, power, education) are within reach. The growth rate accelerates exponentially — going from 500 to 1,000 residents takes as long as going from 1,000 to 5,000. The key is maintaining all growth conditions simultaneously.

Happiness Management

Track four happiness pillars: Basic Needs (food, water, power — must be 80%+), Services (schools, hospitals, fire/police — 60%+ for growth), Environment (parks, cleanliness, noise — each park adjacent to residential adds 5% happiness), and Economy (employment rate and wages — above 95% employment triggers a happiness bonus).

Education & Skills

Building schools near residential areas produces educated workers, who earn higher wages and contribute to high-skill industries (tech parks, research labs). High-skill industries generate 3x tax revenue per employee compared to low-skill factories. Invest in education early to position your city for high-value economic growth.

Avoiding Population Decline

Population decline triggers when happiness drops below 40% for 3+ consecutive months. The most common triggers: water/power outages (fix immediately — 2-hour outages start permanent resident emigration), high unemployment (zone more commercial or light industrial), and low service coverage (build hospitals/schools before expanding residential zones).

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