Product management interviews frequently include estimation questions that require candidates to calculate market sizes, user bases, or revenue projections. Having reliable baseline data helps candidates focus on problem-solving rather than guessing fundamental statistics.
What’s included in this data cheat sheet:
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US population data for major cities and metropolitan areas
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Global population statistics by continent and key countries
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US demographic and economic assumptions (GDP, median income, smartphone penetration)
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Internet user statistics by region and country
How to use it:
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Reference during practice sessions to build familiarity with key numbers
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Use as a foundation for structured estimation approaches covered in Interview Math
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Apply the data points to create realistic assumptions in your calculations
This resource complements systematic estimation frameworks by providing the factual foundation needed for credible market sizing and revenue calculations.
Data sheet compiled by Harsha Srivatsa
