Brooklyn is a borough of New York City, coextensive with Kings County, in the U.S. state of New York. Kings County is the most populous county in the State of New York, and the second-most densely populated county in the United States, behind New York County (Manhattan). Brooklyn is also New York City's most populous borough, with 2,736,074 residents in 2020. In the first decades of the 21st century, Brooklyn has experienced a renaissance as a destination for hipsters, with concomitant gentrification, dramatic house price increases, and a decrease in housing affordability. Some new developments are required to include affordable housing units. Since the 2010s, parts of Brooklyn have evolved into a hub of entrepreneurship, high technology start-up firms, postmodern art and design.

