Manhattan is in New York County. The two names refer to the exact same territory: the island and its associated smaller islands operate as the Borough of Manhattan under New York City government and as New York County under New York State law. Both designations are correct, but they’re used in different contexts.
Why Manhattan Has Two Names
New York County is one of the 14 original counties established in 1683 under colonial rule. When the modern City of New York formed on January 1, 1898, the five boroughs merged into a single municipal government, but the underlying county boundaries stayed in place.1NYC Archaeological Repository: The Nan A. Rothschild Research Center. Consolidation of the Five-Borough City The New York City Administrative Code confirms that the Borough of Manhattan consists of the territory known as New York County.2American Legal Publishing. New York City Administrative Code 2-201 – The City of New York, Territory Thereof and Extent Of
Every address on the island falls within both jurisdictions at once. The borough handles city-level governance. The county handles state-mandated functions that continue to run through the county framework even inside New York City.
One name that does not exist in law: “Manhattan County.” A document addressed to Manhattan County is technically incorrect, because the state recognizes only New York County.
Manhattan as a Borough
City services arrive through the borough side of this arrangement. When you call 311 about a pothole, file a noise complaint, or interact with the NYPD, you’re dealing with the New York City municipal government. Sanitation routes, park maintenance, and building code enforcement all flow through this city-level structure. The New York City Charter establishes the boroughs and the agencies that serve them.3New York City Government. New York City Charter
Manhattan also has its own borough-level elected official, the Manhattan Borough President, who chairs the Borough Board and weighs in on land use decisions and the annual city budget.5NYC Charter. Chapter 4 – Borough Presidents – Section 85
Manhattan as New York County
County-level functions look different. New York County exists so the state can administer courts, elect a district attorney, and maintain certain public records independent of city politics. The New York State Constitution requires that each county elect its own district attorney and maintain a county clerk, even in counties that sit inside New York City.4Justia. New York Constitution Article XIII Section 13 – Law Enforcement and Other Officers
Residents encounter the county framework when they step into a courtroom, record a property deed, register a business name, or receive a jury summons.
Courts
Courts in Manhattan operate under the New York County banner, not under the city government. The Supreme Court of the State of New York, New York County, is the primary trial court handling major civil disputes and felony criminal cases. Despite the name, “Supreme Court” in New York is the trial-level court, not the highest court in the state. Civil cases exceeding $50,000 are filed here, since the New York City Civil Court handles matters up to that threshold.
The Surrogate’s Court of New York County handles probate of wills, estate administration, and guardianship of minors’ property, and shares jurisdiction over adoption proceedings with the Family Court.6Justia. New York Constitution Article VI Section 12 – Surrogates Courts, Judges, Jurisdiction Most of these courthouses are clustered near Foley Square in lower Manhattan.
Legal filings must reference “New York County” rather than “Manhattan.” The term Manhattan has no formal legal standing in court records or state procedural rules, and using it can cause filings to be delayed or rejected.
The District Attorney
The New York County District Attorney is the chief prosecutor for Manhattan and is elected to a four-year term.7New York State Senate. New York County Law 926 – Election of District Attorneys, Term and Vacancies This is a county office, not a city one. New York City has five separate district attorneys, one for each county that overlaps with a borough. The Manhattan DA prosecutes state-level crimes committed within New York County, from street offenses to white-collar fraud and public corruption cases.
The County Clerk
The New York County Clerk’s office handles a set of records distinct from what the city keeps. If you operate a business under a name other than your own legal name, you need to file a business certificate (commonly called a DBA) with the county clerk.8NYC Business. Business Certificate for Sole Proprietorships and General Partnerships Filing fees run around $100 for the county portion plus a separate state filing fee. The county clerk also administers the oath of office for notaries, though the actual notary commission comes from the New York Secretary of State.
Jury Duty
Manhattan residents summoned to state jury duty are called under the New York County court system. Once a person serves, they cannot be called again for at least six years, and anyone who serves more than ten days is exempt for at least eight years.9New York Courts. Juror Questions and Answers FAQs There are no automatic exemptions from state jury service in New York.
Federal jury duty in Manhattan runs separately, through the U.S. District Court for the Southern District of New York. Federal law prohibits requiring jury service more than once every two years.10United States District Court Southern District of New York. Jury Duty Frequently Asked Questions
Property Records: A City Function, Not a County One
One record-keeping task that sounds like it should be a county matter is actually a city one. Recording and searching property records in Manhattan runs through the Office of the City Register, which maintains the Automated City Register Information System, or ACRIS. The database stores deeds, mortgages, and other recorded documents for Manhattan properties dating back to 1966.11Department of Finance. ACRIS You can search by address or by borough-block-lot number. The City Register handles this recording for Manhattan, Brooklyn, Queens, and the Bronx.12NYC Department of Finance. Recording Property-Related Documents
Marriage licenses, birth certificates, and death certificates are also city functions in New York, issued by the NYC Marriage Bureau and the NYC Department of Health rather than by any county office.
Which Name to Use, and When
For everyday conversation and mailing addresses, “Manhattan” works fine. The formal “New York County” name is what you need in a specific set of situations:
- Court filings, summonses, and subpoenas in state court.
- Property deeds and other recorded real estate documents.
- Business certificates (DBAs) filed with the county clerk.
- Estate and probate proceedings in Surrogate’s Court.
- Criminal cases prosecuted by the District Attorney.
- State jury summonses.
If a form or filing asks for the county, the answer is always New York County, never Manhattan and never Manhattan County. Getting that right the first time is often the difference between a document being accepted and being sent back.