Benchmark
How America's $8.6 Trillion-Generating Cities Compare to Entire Countries
Top 20 U.S. metropolitan economies range in size from Canada to Iraq
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If New York City were a country, its $1.6 trillion economy puts it just ahead of nearby Canada. Los Angeles would rank just behind Mexico next door.
The U.S. is not only the richest nation in the world but also among the most urbanized. Its top 20 metropolitan areas, with 120 million people, represent around half of the entire country's gross domestic product.