The overall World’s Best Cities rankings are determined by analysing public perception, combined with a wide range of factors that have demonstrated moderate to strong correlations with attracting prime age population (aged 25-44), visitor expenditure, and/or business formation. The key takeaway from the latest analysis is of the strength and resilience of some of the world’s large cities. The overall World’s Best Cities rankings are determined by analysing public perception, combined with a wide range of factors that have demonstrated moderate to strong correlations with attracting prime age population (aged 25-44), visitor expenditure, and/or business formation. The key takeaway from the latest analysis is of the strength and resilience of some of the world’s large cities.