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Smart answer:
After reading 7550 websites, we found 2 different results for "what is most populous borough in new york city"
Brooklyn
Brooklyn; famed for Brooklyn's bridge, Brooklyn's long-departed Dodgers, Brooklyn's Botanic Garden, and Brooklyn's accent; is the most populous borough in New York City and arguably the most colorful.
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Manhattan,
Manhattan is the geographically smallest yet most populous of New York City's five boroughs.
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