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If the entire world population of 6.7 billion lived in the United States, the country’s density would be about 700 people per square kilometer, according to the New York-based Center for Migration Studies.
The Netherlands has a density of about 400 people per square kilometer. Other cities with a high number of people per square kilometer include Singapore (6,500), Hong Kong (6,600), Macao (18,500), and Monaco (22,000).
Via Slog.