What county is Brooklyn in? Brooklyn is located entirely within Kings County, New York. In fact, the geographic boundaries of the borough of Brooklyn and Kings County are completely coextensive, meaning they occupy the exact same physical space and share the same borders. If you are standing anywhere in Brooklyn, you are simultaneously standing in Kings County.
Understanding how this relationship works requires looking past standard American municipal layouts. While most counties across the United States contain multiple cities, towns, and villages, New York City operates under a unique administrative structure. When the five boroughs consolidated into a single modern city in 1898, each borough was mapped directly to an existing New York state county.
The Unique County Structure of New York City
Most US counties function as regional local governments with their own county boards, executives, and localized taxing powers. New York City handles things differently. Within the five boroughs, county governments were largely stripped of their independent legislative powers during consolidation to avoid political redundancy.
Instead, the counties inside New York City serve primarily as judicial and administrative districts for the state court system, district attorneys, and historical record-keeping. The five NYC boroughs map to their respective counties like this:
- Brooklyn maps to Kings County.
- Manhattan maps to New York County.
- Queens maps to Queens County.
- The Bronx maps to Bronx County.
- Staten Island maps to Richmond County.
Because of this system, you won't find a traditional "Kings County Executive" making local municipal laws for Brooklyn. Citywide governance comes from the Mayor of New York City and the City Council, while local borough matters are handled by the Brooklyn Borough President, an office with largely advisory and advocacy powers rather than legislative authority.
Geographic Reality and Location
Geographically, Kings County sits at the southwestern tip of Long Island. It shares its northern and eastern border with Queens County (the borough of Queens). To the west and south, water separates it from other areas, bounded by the East River, New York Harbor, Jamaica Bay, and the Atlantic Ocean.
Covering roughly 71 square miles (with about 69 square miles of land area), Kings County is geographically the smallest county in land area among the five NYC counties, yet it holds the title of the most populous. Over 2.6 million residents live within its borders, making it more populous than many major US cities. If Brooklyn were still an independent city—as it was until the 1898 consolidation—it would rank as one of the largest cities in the United States by population alone.
Why Is It Called Kings County If It Is Brooklyn?
The name dates back to the colonial era long before the United States was founded. In 1683, the English colonial administration divided the Province of New York into twelve original counties. They named this specific southwestern section Kings County to honor King Charles II of England.
Long before it was a single unified urban area, the county consisted of several smaller Dutch-founded towns, including Breuckelen (from which the name Brooklyn eventually derived), Flatbush, Flatlands, New Utrecht, Gravesend, and Bushwick. Over time, the town of Brooklyn grew larger, absorbed the surrounding towns, and eventually converted the entire county into a single city before that city was folded into Greater New York. Even though residents and businesses universally use "Brooklyn" for daily life, mailing addresses, and cultural identity, legal documents, real estate deeds, and court systems continue to rely on the name Kings County.
Practical Impacts of the Brooklyn and Kings County Dual Name
Navigating life, bureaucracy, and legal matters in Brooklyn means understanding when to use the borough name versus the county name. Confusing the two rarely causes mail delivery issues, but official paperwork requires precision.
- Mail and Shipping: The United States Postal Service (USPS) accepts "Brooklyn, NY" alongside the correct ZIP code. Writing "Kings County" on a standard mailing address is unnecessary and sometimes confuses automated sorting machines.
- Legal and Court Systems: If you are called for jury duty, deal with property deeds, or interact with the New York State Supreme Court, your paperwork will explicitly reference Kings County. The Kings County Supreme Court sits at 360 Adams Street in Downtown Brooklyn.
- Voter Registration: Elections for local, state, and federal offices are managed through the NYC Board of Elections, which maintains a specific borough office for Kings County voters.
Frequently Asked Questions
Is Kings County the same thing as Brooklyn?
Yes. Geographically and administratively, Brooklyn and Kings County occupy the exact same area. Brooklyn is the municipal borough name, while Kings County is the legal and judicial county name.
Why doesn't Brooklyn have a county government?
When New York City consolidated in 1898, the individual county governments within the five boroughs were stripped of their local legislative powers to streamline administration under a single city government. The county designation remains primarily for judicial, state administrative, and record-keeping purposes.
Is Brooklyn considered part of Long Island?
Geographically, yes. Brooklyn and Queens sit on the western tip of Long Island. However, culturally and politically, New Yorkers do not refer to Brooklyn or Queens as "Long Island." In local parlance, "Long Island" refers exclusively to Nassau and Suffolk counties, which sit east of the city limits.
Who is the head of Kings County?
Kings County does not have a traditional county executive or county board of commissioners. Executive authority for municipal services rests with the Mayor of New York City, and local borough representation is led by the Brooklyn Borough President.
