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The 30 Largest Cities in Oceania by Population - Voronoi

Jan 29, 2026

The 30 Largest Cities in Oceania by Population

The 30 Largest Cities in Oceania by Population

What We're Showing

This infographic ranks Oceania’s 30 most populous cities in 2025 using data from the UN World Population Prospects 2025.

Key Takeaways

Sydney remains Oceania’s largest city, with over 4.1 million residents in 2025.
Australian cities dominate the ranking, accounting for over half of the top 30.
Papua New Guinea hosts six of the 30 most populous cities.