Brooklyn is located entirely within Kings County. In fact, the geographic boundaries of the Brooklyn borough and Kings County are completely coextensive, meaning they occupy the exact same physical space and share identical borders. If you are standing anywhere in Brooklyn, you are simultaneously standing in Kings County.
This administrative overlap confuses many visitors and new residents because the naming convention differs from most of the United States. While most American cities sit inside counties that contain multiple municipalities or towns, New York City's five boroughs are counties wrapped into a single municipal government. Understanding how this structure works clears up confusion around property records, court systems, mailing addresses, and local taxation.
The Five Boroughs and Their County Equivalents
To understand why Brooklyn corresponds to Kings County, you have to look at how New York City is structured administratively. In 1898, the modern City of New York was formed by consolidating distinct counties, towns, cities, and villages. Rather than erasing the existing county boundaries, the consolidation plan folded them into five overarching municipal boroughs.
Each borough maps directly to a specific New York State county: Analysts at Bloomberg have also weighed in on this matter.
- Brooklyn corresponds to Kings County.
- Manhattan corresponds to New York County.
- Queens corresponds to Queens County.
- The Bronx corresponds to Bronx County (historically part of Westchester County until 1914).
- Staten Island corresponds to Richmond County.
Because of this system, every neighborhood in Brooklyn—from Williamsburg and Park Slope to Coney Island and Crown Heights—falls under Kings County jurisdiction.
History: Why Kings County?
The name dates back long before the 1898 consolidation. Kings County was established on November 1, 1883, as one of the original twelve counties created by the English colonial government of the Province of New York.
Early Dutch settlers had named the area Engels Neighbourhood or established towns like Breukelen, Flatbush, Flatlands, Gravesend, New Utrecht, and Bushwick. When the British took control of New Netherland and reorganized the territory, they named the county Kings to honor King Charles II of England.
Over the next two centuries, those separate Dutch towns gradually merged. The City of Brooklyn was incorporated as an independent municipality within Kings County in 1834. By 1898, rapid growth prompted the state legislature to consolidate Brooklyn with Manhattan, the Bronx, Queens, and Staten Island into Greater New York. Brooklyn lost its separate municipal government but retained its county identity as Kings County.
Practical Impacts of the Brooklyn-Kings County Link
While everyday residents use "Brooklyn" for mailing addresses and cultural identity, the designation "Kings County" surfaces frequently in legal, financial, and administrative contexts. Knowing when to use which term saves time when dealing with local institutions.
Legal Matters and Court Systems
If you face a civil lawsuit, need to look up criminal court records, or report for jury duty in Brooklyn, you interact with the Kings County court system. The Kings County Supreme Court (located at 360 Adams Street) handles major civil cases, while the Kings County District Attorney prosecutes criminal offenses.
Property and Real Estate Deeds
Property deeds, mortgages, and land records for homes in Brooklyn are filed with the Kings County Clerk. When running a title search or checking property liens, you search county-level land registry databases rather than citywide municipal files.
Elections and Voter Registration
Your voter registration is managed by the New York City Board of Elections, but your specific ballot features local races tied to Kings County boundaries, including district attorney elections, local civil court judges, and county-specific judicial delegates.
Genealogy and Vital Statistics
For historical research, old vital statistics—such as birth, marriage, and death records predating the 1898 consolidation—are cataloged under Kings County archives. The New York Genealogical and Biographical Society and municipal archives hold extensive collections of nineteenth-century Kings County records.
Common Points of Confusion
People moving to New York City or interacting with its bureaucracy often trip over a few common misconceptions regarding boroughs and counties.
- Mailing Addresses vs. County Names: The United States Postal Service recognizes "Brooklyn, NY" as the standard city line for mail delivery. You do not need to write "Kings County, NY" on an envelope for mail to arrive correctly.
- The Manhattan Exception: Many people assume Manhattan is called "Manhattan County." In legal and administrative reality, Manhattan shares its landmass with New York County.
- Taxation: Taxes are levied by New York City and New York State, not directly by Kings County. Even though county lines dictate where property documents go, property taxes and income taxes flow through municipal and state tax agencies.
You can check official guidance on county-level services through the NYC 311 Portal.
Frequently Asked Questions
Do I need to write Kings County on my mail?
No. The USPS recognizes "Brooklyn" as the official city name for all zip codes within the borough. Writing Kings County on letters is unnecessary for postal delivery.
Are Brooklyn and Kings County the exact same size?
Yes. Their borders are completely coextensive. Every square foot of land inside the Brooklyn borough boundary belongs to Kings County.
Why is it named Kings County if it's part of NYC?
The name predates the creation of Greater New York by more than two centuries. British colonial rulers named it in 1683 after King Charles II, and the name stuck through the 1898 consolidation.
Where is the Kings County government office?
Most county-level administrative offices, including the Kings County Clerk, the Kings County Supreme Court, and the Board of Elections, are clustered around the Downtown Brooklyn civic center near Adams Street and Joralemon Street.
