Brooklyn is New York City's most populous borough with approximately 2.5 million residents, and second largest in area.

Since 1896, Brooklyn has had the same boundaries as Kings County, which is now the most populous county in New York State and the second most densely populated county in the United States, after New York County (Manhattan).

Brooklyn was an independent city until its consolidation with New York City in 1898, and continues to maintain a distinct culture, independent art scene, and unique architectural heritage. Many Brooklyn neighborhoods are ethnic enclaves where particular ethnic groups and cultures predominate.