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Nassau, New York
Village
Location in Rensselaer County and the state of New York.
Nassau, New York Location within the state of New York
Coordinates: 42°31′N 73°37′W / 42.517°N 73.617°W / 42.517; -73.617
Country	United States
State	New York
County	Rensselaer
Government
• Type	Incorporated Village
• Mayor	Robert Valenty
Area [1]
• Total	0.70 sq mi (1.81 km2)
• Land	0.70 sq mi (1.81 km2)
• Water	0 sq mi (0.00 km2)
Elevation	404 ft (123 m)
Population  (2020)
• Total	1,103
• Density	1,578.5/sq mi (609.48/km2)
Time zone	UTC-5 (Eastern (EST))
• Summer (DST)	UTC-4 (EDT)
ZIP code	12123
Area code	518
FIPS code	36-49506
GNIS feature ID	0958278

Nassau is a village located in the Town of Nassau in Rensselaer County, New York, United States. The population was 1,133 at the 2010 census.

The Village of Nassau is in the southern part of the county in the Town of Nassau, with a small western portion in the Town of Schodack. Nassau is bordered on the west by the Valatie Kill and Schodack township and is 15 miles east of Albany, New York state's capital city.

The village is near the site of the first settlement of the town, which took place circa 1760. The community was first known as "Union Village." The village was originally incorporated in the 19th century as "Schermerhorn's Village," receiving charters in 1819 and 1866, but abandoned that village status until it more recently gained incorporation as Nassau Village.

The Albany Avenue Historic District, Chatham Street Row, and Church Street Historic District are listed on the National Register of Historic Places.^[2]

Nassau is located at

This article's lead section may be too short to adequately summarize the key points. Please consider expanding the lead to provide an accessible overview of all important aspects of the article. (December 2024)

Nassau County Sheriff's Department
Seal of the Nassau County Sheriff's Department
Abbreviation	NCSD
Agency overview
Formed	1899
Jurisdictional structure
Operations jurisdiction	Nassau County, New York, USA
Map of Nassau County Sheriff's Department's jurisdiction
Size	287 square miles (land)[1] 166 square miles (water)
Population	1,334,544
Legal jurisdiction	Nassau County, New York
General nature	Local civilian police
Operational structure
Correction Officers	835
Deputy Sheriffs	65
Sheriff responsible
Facilities
Deputy Commands	County Building 240 & Family Court (Mineola, NY)
Jails	Correctional Facility (East Meadow, NY)
Website
nassaucountyny.gov/1891/Sheriffs-Department

The Nassau County Sheriff's Department is one of the main law enforcement agencies of Nassau County, in New York, United States.

The office of the sheriff is historically traceable to Alfred the Great in late 9th century Anglo-Saxon England. The unified kingdom was delineated into shires, known today as counties. A king’s representative, known as a shire-reeve, was assigned to each county, acting on behalf of the king. English language would later evolve and over time the shire-reeve became known as the sheriff.^[2] The long-standing tradition of the sheriff was brought to Long Island by its early English settlers. Long Island was delineated into three geographical boundaries known as ridings. The West riding comprised present-day Nassau, Queens, and Kings counties. The East riding comprised present-day Suffolk County. The North riding comprised the remaining territory. Each riding had a deputy sheriff and a high sheriff was appointed by the governor to oversee the collective ridings that came to be known as Yorkshire. The constitutional convention of 1821 abolished the practice of appointing a high sheriff and instead, each individual county would choose their own sheriff through an election by the people.^[3] The office of the sheriff is the oldest law enforcement position in the United States.^[4]

In 1898, with approval from the New York State Legislature, the towns of Oyster Bay, North Hempstead, and a large portion of the Town of Hempstead were separated from Queens County officially forming the County of Nassau on January 1, 1899.^[5] The newly created Nassau County would have William H Wood as its first elected sheriff.^[6] Sheriff Wood went on to appoint Henry W Skinner as his undersheriff and also appointed the first deputy sheriff's thus making the Nassau County Sheriff's Department the oldest law enforcement agency in Nassau County. The Nassau County Sheriff's Department went on to play a vital role in the early foundation of law enforcement in Nassau County.

In 1900 the Nassau County Board of Supervisors approved the construction of the first Nassau County Jail to be under the control of the Sheriff's Department. The jail was built as an addition to the rear of the county courthouse located in Mineola. The jail consisted of multiple floors and wings which provided separate housing for men and women. It also provided a space in the center for jailors and Matron to operate within.^[7] In 1950, to keep pace with Nassau County’s booming population, the county constructed a new correctional center located in East Meadow, New York. The East Meadow correctional center has received multiple additions since its inception and remains the central hub for all Division of Corrections operations.

In 1915, the Nassau County Sheriff's Department played a pivotal part in the implementation of a public safety telecommunications system devised by Charles A Ryder of the New York Telephone Company. With the Sheriff's Department at the helm, the system connected the various scattered county, town, and city law enforcement agencies within the county to a central hub. This system enabled law enforcement throughout the county to easily and effectively communicate pertinent information regarding reported crimes in progress with one another. All law enforcement throughout Nassau County could be alerted to an incident if required.^[8]

By the 1920s New York City had begun to blend into Nassau County's western border. As a consequence to the prohibition of alcohol organized crime also began to boom. In 1925 due to rising concerns for public safety the Nassau County Police Department was founded. At the time of its formation, the Police Department was composed of fifty-five deputy sheriffs who were absorbed from the Nassau County Sheriff's Department.^[9] Today, the Nassau County Sheriff's Department employs approximately 1200 people including civilian staff, correction officers, and deputy sheriffs.

• 
  Nassau County sheriff Wood and undersheriff Skinner at the Nassau County's temporary court house, circa 1899
• 
  Nassau County deputy sheriffs patrolling on motorcycles, cicra 1911^[10]
• 
  Nassau County deputy sheriff tickets Lawrence Sperry after landing a plane in the street, circa 1922.^[11]
• 
  Deputy sheriff outside the Mineola courthouse, circa 1955
• 
  South SideMmessenger newspaper clipping, "Nassau County Deputy Sheriff's Foil Barn Thief," circa 1910^[12]
• 
  Nassau County Review newspaper clipping, "Children Saved by Nassau County Deputy Sheriff," circa 1913^[13]

The Nassau County Sheriff's Department is organized into two distinct divisions known as the Division of Corrections and the Division of Enforcement. The Division of Corrections is responsible for all aspects of the county’s correctional facility (jail). The Division of Enforcement executes orders from the New York state courts and enforces both civil and criminal law throughout the county.

Department Heads

Title	Insignia	Duties
Sheriff		The sheriff is first in command
Undersheriff		The undersheriff is second in command

Division of Corrections

Title	Insignia	Duties
Commissioner of Corrections	Unknown	The commissioner of corrections is a division commander.
Deputy Undersheriff		The deputy undersheriff is an assistant division commander.
Chief Administrative Officer	Unknown	The chief administrative officer is a special units commander.
Correction Officer Captain		Corrections officer captains are platoon/unit commanders.
Correction Officer Lieutenant		Corrections officer lieutenants are tour commanders.
Correction Officer Sargent		Corrections officer sergeants are tour supervisors.
Correction Officer Corporal		Corrections officer corporals are housing unit supervisors.
Correction Officer

Division of Enforcement

Title	Insignia	Duties
Deputy Undersheriff		The deputy undersheriff is a division commander.
Deputy Sheriff Captain		Deputy sheriff captains are assistant division commanders.
Deputy Sheriff Lieutenant		Deputy sheriff lieutenants are unit commanding officers.
Deputy Sheriff Sargent		Deputy sheriff sergeants are unit field supervisors.
Deputy Sheriff

The Division of Corrections is staffed by correction officers who are sworn peace officers pursuant to Article 2.10 Subsection 25 of the states Criminal Procedure Law.^[14] The mission of the Division of Corrections is to provide a safe and secure environment for staff and inmates. Correction officers provide for the care, custody, control, and rehabilitation of detainees and inmates committed to its custody by the judiciary. In this regard, the department is required to comply with all laws, specifically correction law, oversight agencies such as the New York State Commission of Corrections, existing consent decrees, and court mandates.^[15]

• Correction officers attend and graduate from the Correction Officers Academy ran by the Nassau County Sheriff's Department. Academy training is approximately 12 weeks and includes the following:
  • Certification by the NYS DCJS - Metropolitan Police Training Council as peace officers (completing the Basic Course for Peace Officers).
  • Training in New York State Correction, Penal, and Criminal Procedure Law.
  • Physical training and defensive tactics, including handcuffing, control techniques, and less lethal use of force.
  • Training in firearms and the use of deadly physical force.
  • Training and first-aid, CPR, and AED.
  • Training in mental health awareness and de-escalation techniques.
• Correction officers provide security at the Nassau County Correctional Center (Jail) and transport inmates as required for court appearances, medical attention, and transfer of custody pursuant to sentencing. Correction officers are assigned to work in the following units.
  • Operations Unit
  • Security Unit
  • Sheriff's Bureau of Investigation (SBI)
    • Medical Investigations Unit
    • Internal Affairs
    • Criminal Investigation Unit
    • Gang Unit
    • Grievance Unit
  • Communications Unit
  • K-9 Unit
  • Transportation Unit
  • Visiting Unit
  • Rehabilitation Unit
  • Medical Unit
  • Sheriff's Emergency Response Team (S.E.R.T)

• 
  Patch worn by Nassau County Correction Officers & Civilian LSU/CC Staff.
• 
  Shield worn by Nassau County Correction Officers.
• 
  Nassau County Corrections Dodge Durango.
• 
  Nassau County Corrections Ford Explorer (Old Design).
• 
  Nassau County Corrections Ford Excursion (Old Design).

The Division of Enforcement is staffed by deputy sheriffs who are sworn NYS-certified police officers pursuant to Article 1.20 Subsection 34(B) of the states Criminal Procedure Law.^[16] The mission of the Division of Enforcement is to carry out the orders of the New York State Courts. This includes the execution of warrants, the discovery and seizure of property, the serving of civil process, and to conduct evictions.^[17] Deputy Sheriffs draw their authority to enforce both criminal and civil law from the NYS Criminal Procedure Law, NYS Constitution, and the Nassau County Charter.^[18]

• Deputy sheriffs attend and graduate from the Nassau County Police Academy alongside officers from the county police as well as officers from village and city police departments within Nassau County. Police academy training is approximately 6 months includes the following.
  • Certification by the NYS DCJS - Metropolitan Police Training Council as Police Officers (completing the Basic Course for Police Officers).
  • Training and certification in Standardized Field Sobriety Testing for DWI offenders.
  • Training in New York State Penal, Criminal Procedure, Vehicle and Traffic, Environmental Conservation, Domestic Relations and other Laws.
  • Physical Training exceeding the cooper standards and Extensive Defensive Tactics, including arrest and control techniques.
  • Training in Emergency Vehicle Operations.
  • Training in Firearms and the use of Deadly Physical Force.
  • Training less lethal force including Tazer, Baton, and Pepper Spray.
  • Training and NYS Department of Health certification as emergency care providers.
  • Training in Mental Health Awareness and De-Escalation Techniques.
• Deputy sheriffs do not provide security at the Nassau County Correctional Center (Jail) or in the courts. Deputy sheriffs work throughout the entire geographical area of Nassau County and are assigned to the following units.
  • Sheriff's Warrant Apprehension Program (SWAP)
  • Landlord and Tenant Eviction Unit
  • Domestic Violence Unit / Family Court Unit
  • Field Unit / Personal and Real Property Law Unit
  • Joint Federal Task Forces

• 
  Shield worn by Nassau County deputy sheriff's (Enscribed Deputy Sheriff).
• 
  Patch worn by Nassau County deputy sheriff's (Stitching says Deputy Sheriff).
• 
  Nassau County deputy sheriff Dodge Durango.
• 
  Nassau County deputy sheriff Ford Explorer
• 
  Nassau County deputy sheriff Ford Explorer (Old Design).

The Nassau County Sheriff's Department employs both non-uniformed and uniformed civilians (non–law enforcement). These civilians support the administrative and logistical needs of the department by carrying out various duties as it relates to their positions.

• Non-uniformed civilians
  • Administrative assistants
  • Clerks and secretaries
  • Cashiers
  • HR personnel
  • Accountants, Payroll, and Budgeting Personnel
• Uniformed civilians (Logistical Support Unit & Civilian Correctional Center Staff)
  • Vehicle mechanics and fleet maintenance supervisors
  • Building maintenance
  • Grounds keepers
  • Cooks and food service supervisors

• 
  Patch worn by the LSU and Civilian Correctional Center Staff (Same patch also worn by Correction Officers).
• 
  New Style Badge worn by the LSU and Civilian Correctional Center Staff.

Since the establishment of the Nassau County Sheriff's Department, 4 corrections officers have died in the line of duty.

In August 1965 the Nassau County County Board of Supervisors, the predecessor to the County Legislature, passed a resolution (to begin in 1968) for a local proposal granting the county executive the authority to appoint a county sheriff if approved by the majority of the board. In November 1965 the proposal was put to a vote by county residents and passed. Joseph F. Maher was sworn in as the first appointed sheriff in Nassau County history On Jan. 1, 1968.^[23]

Article XIII of the current New York State Constitution states,

Except in counties in the city of New York and except as authorized in section one of article nine of this constitution, registers in counties having registers shall be chosen by the electors of the respective counties once in every three years and whenever the occurring of vacancies shall require; the sheriff and the clerk of each county shall be chosen by the electors once in every three or four years as the legislature shall direct.^[24]

While there is an exemption allowing an appointed sheriff in the 5 counties within the City of New York, no such exemption exists for Nassau County. Of the 62 counties in New York State, Nassau County is the only county without exemption in the New York State Constitution to have an appointed sheriff which has led some to question the constitutionality of having an appointed sheriff for Nassau County.^[25] The appointment of a sheriff in Nassau County has not yet been challenged through the courts.

• List of law enforcement agencies in New York
• List of law enforcement agencies on Long Island
• Nassau County Police Department

Counties of New York
Location	State of New York
Number	62
Populations	5,082 (Hamilton) – 2,617,631 (Kings)
Areas	33.77 square miles (87.5 km2) (New York) – 2,821 square miles (7,310 km2) (St. Lawrence)
Government	County government
Subdivisions

Part of a series on
Regions of New York
Downstate New York New York City Long Island Hudson Valley (Lower)
Upstate New York   Hudson Valley (Middle and Upper) Capital District North Country Southern Tier Mohawk Valley Central New York Finger Lakes Western New York
Administrative divisions Counties Cities Towns Indian reservations Unorganized Territory Villages Census-designated places Places (including hamlets)
Timelines of town creation Downstate New York Hudson Valley Capital District North Country Central New York Southern Tier Western New York

There are 62 counties in the U.S. state of New York.

The first 12 counties were created in 1683 soon after the British took over the Dutch colony of New Amsterdam; two of these counties were later abolished, their land going to Massachusetts.^[1] These counties were carried over after independence in 1783, but most of the counties were created by the state in the 19th century. The newest county is the Bronx, created in 1914 from the portions of New York County that had been annexed from Westchester County in the late 19th century.^[2] New York's counties are named for various Native American words; British provinces, counties, cities, and royalty; early American statesmen and military personnel; and New York State politicians.^[3]

Excepting the five boroughs of New York City, New York counties are governed by New York County Law and have governments run by either a Board of Supervisors or a County Legislature, and either an elected County Executive or appointed county manager. Counties without charters are run by a Board of Supervisors, in which Town Supervisors from towns within the county also sit on the county Board of Supervisors. For counties with a charter, the executives generally have powers to veto acts of the county legislature. The legislatures have powers of setting policies, levying taxes and distributing funds.

Throughout the state, including NYC, the court system and public prosecution is primarily a matter of state law but is generally organized along county lines, chosen by county voters.

Five of New York's counties are each coextensive with New York City's five boroughs. They are New York County (Manhattan), Kings County (Brooklyn), Bronx County (The Bronx), Richmond County (Staten Island), and Queens County (Queens). They are the smallest counties in New York by area.

In contrast to other counties of New York, the powers of the five boroughs of New York City are very limited and in nearly all respects are governed by the city government.^[4] Some officials are elected on a borough-wide basis, the five borough presidents deal with Borough matters, while the district attorneys, and all county and state supreme court judges are generally concerned with the administration of state criminal and civil law and local ordinances in the county. There are no official county seats, but the locations of borough halls and courthouses bestow certain neighborhoods an informal designation as county seats within their boroughs:

• The Bronx County Courthouse and the borough's main post office are located in the Concourse section of the Bronx. The separate Bronx Borough Hall burned down in 1969.
• Brooklyn Borough Hall, the Federal Building and Post Office, and county Supreme Court are in Downtown Brooklyn.
• The Municipal Building, where the Manhattan Borough President's office is located, and most courthouses are in the downtown Civic Center. The General Post Office is in Midtown Manhattan.
• Queens Borough Hall and a courthouse are in Kew Gardens. Another major courthouse, post office, and the Long Island Railroad hub are in Jamaica. Queens also has general post offices in Flushing, Long Island City and Far Rockaway.
• Staten Island Borough Hall, three courthouses, and the St. George Terminal transportation hub are in the St. George neighborhood.

County	FIPS Code [5]	County seat [6]	Est. [6][7]	Formed from[2]	Named for[3]	Density (Pop./mi2)	Pop. (2024) [8]	Area [6]	Map
Albany County	001	Albany	Nov 1, 1683	One of 12 original counties created in the New York colony	James II of England (James VII of Scotland) (1633–1701), who was Duke of York (English title) and Duke of Albany (Scottish title) before becoming King of England, Ireland, and Scotland.	600.31	319,964	533 sq mi (1,380 km2)
Allegany County	003	Belmont	Apr 7, 1806	Genesee County	A variant spelling of the Allegheny River	45.74	47,299	1,034 sq mi (2,678 km2)
Bronx County	005	none (sui generis)	Jan 1, 1914[9]	New York County	The Bronx River	24,111.51	1,384,724	57.43 sq mi (149 km2)
Broome County	007	Binghamton	Mar 28, 1806	Tioga County	John Broome (1738–1810), fourth Lieutenant Governor of New York	274.68	196,397	715 sq mi (1,852 km2)
Cattaraugus County	009	Little Valley	Mar 11, 1808	Genesee County	A word from an uncertain Iroquoian language meaning "bad smelling banks", referring to the odor of natural gas which leaked from Cattaraugus Creek	57.61	75,475	1,310 sq mi (3,393 km2)
Cayuga County	011	Auburn	Mar 8, 1799	Onondaga County	The Cayuga tribe of Native Americans	86.30	74,567	864 sq mi (2,238 km2)
Chautauqua County	013	Mayville	Mar 11, 1808	Genesee County	Loanword from the Erie language describing Chautauqua Lake; language now lost and cannot be translated	82.74	124,105	1,500 sq mi (3,885 km2)
Chemung County	015	Elmira	Mar 20, 1836	Tioga County	A Lenape word meaning "big horn", which was the name of a local Native American village	197.45	81,115	410.81 sq mi (1,064 km2)
Chenango County	017	Norwich	Mar 15, 1798	Tioga County and Herkimer County	An Onondaga word meaning "large bull-thistle"	50.93	45,776	898.85 sq mi (2,328 km2)
Clinton County	019	Plattsburgh	Mar 4, 1788	Washington County	George Clinton (1739–1812), fourth Vice President of the United States and first and third Governor of New York	69.65	77,871	1,118 sq mi (2,896 km2)
Columbia County	021	Hudson	Apr 1, 1786	Albany County	Christopher Columbus (1451–1506), the European explorer	93.05	60,299	648 sq mi (1,678 km2)
Cortland County	023	Cortland	Apr 8, 1808	Onondaga County	Pierre Van Cortlandt (1721–1814), first Lieutenant Governor of New York	91.52	45,945	502 sq mi (1,300 km2)
Delaware County	025	Delhi	Mar 10, 1797	Otsego County and Ulster County	Thomas West, 3rd Baron De La Warr (1577–1618), an early colonial leader in Virginia. Name applied to the bay, river, and Lenape Native Americans	30.10	44,191	1,468 sq mi (3,802 km2)
Dutchess County	027	Poughkeepsie	Nov 1, 1683	One of 12 original counties created in the New York colony	Mary of Modena (1658–1718), Duchess of York and wife of King James II of England	363.59	299,963	825 sq mi (2,137 km2)
Erie County	029	Buffalo	Apr 2, 1821	Niagara County	The Erie tribe of Native Americans	774.74	950,602	1,227 sq mi (3,178 km2)
Essex County	031	Elizabethtown	Mar 1, 1799	Clinton County	The county of Essex in England	19.18	36,744	1,916 sq mi (4,962 km2)
Franklin County	033	Malone	Mar 11, 1808	Clinton County	Benjamin Franklin (1706–1790), the early American printer, scientist, and statesman	27.75	47,086	1,697 sq mi (4,395 km2)
Fulton County	035	Johnstown	Apr 18, 1838	Montgomery County	Robert Fulton (1765–1815), inventor of the steamship	97.70	52,073	533 sq mi (1,380 km2)
Genesee County	037	Batavia	Mar 30, 1802	Ontario County and land acquired in the Holland Purchase	A Seneca phrase meaning "good valley"	116.37	57,604	495 sq mi (1,282 km2)
Greene County	039	Catskill	Mar 25, 1800	Albany County and Ulster County	Nathanael Greene (1742–1786), the American Revolutionary War general	71.28	46,903	658 sq mi (1,704 km2)
Hamilton County	041	Lake Pleasant	Apr 12, 1816	Montgomery County	Alexander Hamilton (1755–1804), the early American political theorist and first Secretary of the Treasury	2.81	5,082	1,808 sq mi (4,683 km2)
Herkimer County	043	Herkimer	Feb 16, 1791	Montgomery County	Nicholas Herkimer (1728–1777), the American Revolutionary War general	40.87	59,585	1,458 sq mi (3,776 km2)
Jefferson County	045	Watertown	Mar 28, 1805	Oneida County	Thomas Jefferson (1743–1826), the early American statesman, author of the Declaration of Independence, and third President of the United States	60.93	113,140	1,857 sq mi (4,810 km2)
Kings County	047	none (sui generis)	Nov 1, 1683	One of 12 original counties created in the New York colony	King Charles II of England (1630–1685)	27,013.74	2,617,631	96.9 sq mi (251 km2)
Lewis County	049	Lowville	Mar 28, 1805	Oneida County	Morgan Lewis (1754–1844), the fourth Governor of New York	20.60	26,570	1,290 sq mi (3,341 km2)
Livingston County	051	Geneseo	Feb 23, 1821	Genesee County and Ontario County	Robert Livingston (1746–1813), the early American statesman and New York delegate to the Continental Congress	96.19	61,561	640 sq mi (1,658 km2)
Madison County	053	Wampsville	Mar 21, 1806	Chenango County	James Madison (1751–1836), the early American statesman, principal author of the Constitution of the United States, and fourth President of the United States	101.32	67,072	662 sq mi (1,715 km2)
Monroe County	055	Rochester	Feb 23, 1821	Genesee County and Ontario County	James Monroe (1758–1831), the early American statesman and fifth President of the United States	550.66	752,202	1,366 sq mi (3,538 km2)
Montgomery County	057	Fonda	Mar 12, 1772	Albany County	Originally Tryon County after colonial governor William Tryon (1729–1788), renamed after the American Revolutionary War general Richard Montgomery (1738–1775) in 1784	121.09	49,648	410 sq mi (1,062 km2)
Nassau County	059	Mineola	Jan 1, 1899	Queens County	The Princes of Orange-Nassau ruled the Netherlands when Long Island was a Dutch colony	3,073.81	1,392,438	453 sq mi (1,173 km2)
New York County	061	none (sui generis)	Nov 1, 1683	One of 12 original counties created in the New York colony	King James II of England (1633–1701), who was Duke of York and Albany before he ascended the throne of England, Duke of York being his English title	49,175.72	1,660,664	33.77 sq mi (87 km2)
Niagara County	063	Lockport	Mar 11, 1808	Genesee County	The Iroquoian name of a tribe within the Neutral Nation, the exact translation of which remains disputed	183.83	209,570	1,140 sq mi (2,953 km2)
Oneida County	065	Utica	Mar 15, 1798	Herkimer County	The Oneida tribe of Native Americans	188.25	228,347	1,213 sq mi (3,142 km2)
Onondaga County	067	Syracuse	Mar 5, 1794	Herkimer County	The Onondaga tribe of Native Americans	582.89	469,812	806 sq mi (2,088 km2)
Ontario County	069	Canandaigua	Jan 27, 1789	Land acquired in the Phelps and Gorham Purchase	An Iroquoian word meaning "beautiful lake"	170.71	113,012	662 sq mi (1,715 km2)
Orange County	071	Goshen	Nov 1, 1683	One of 12 original counties created in the New York colony	William of Orange-Nassau (1650–1702), who became King William III of England	490.78	411,767	839 sq mi (2,173 km2)
Orleans County	073	Albion	Nov 12, 1824	Genesee County	The French Royal House of Orléans	48.58	39,686	817 sq mi (2,116 km2)
Oswego County	075	Oswego	Mar 1, 1816	Oneida County and Onondaga County	The Oswego River, from an Iroquoian word meaning "the outpouring", referring to the mouth of the river	90.17	118,305	1,312 sq mi (3,398 km2)
Otsego County	077	Cooperstown	Feb 16, 1791	Montgomery County	A Native American word meaning "place of the rock"	60.34	60,524	1,003 sq mi (2,598 km2)
Putnam County	079	Carmel Hamlet	Jun 12, 1812	Dutchess County	Israel Putnam (1718–1790), an American Revolutionary War general	400.04	98,409	246 sq mi (637 km2)
Queens County	081	none (sui generis)	Nov 1, 1683	One of 12 original counties created in the New York colony	Catherine of Braganza (1638–1705), Queen of England and wife of King Charles II of England	12,995.52	2,316,841	178.28 sq mi (462 km2)
Rensselaer County	083	Troy	Feb 7, 1791	Albany County	In honor of the family of Kiliaen van Rensselaer (before 1596 – after 1643), the early landholder in the Dutch New Netherland colony	241.73	160,749	665 sq mi (1,722 km2)
Richmond County	085	none (sui generis)	Nov 1, 1683	One of 12 original counties created in the New York colony	Charles Lennox, 1st Duke of Richmond (1672–1723), the illegitimate son of King Charles II of England	4,860.60	498,212	102.5 sq mi (265 km2)
Rockland County	087	New City	Feb 23, 1798	Orange County	Early settlers' description of terrain as "rocky land"	1,749.47	348,144	199 sq mi (515 km2)
St. Lawrence County	089	Canton	Mar 3, 1802	Clinton County, Herkimer County, and Montgomery County	The St Lawrence River, which forms the northern border of the county and New York State	37.65	106,198	2,821 sq mi (7,306 km2)
Saratoga County	091	Ballston Spa	Feb 7, 1791	Albany County	A corruption of a Native American word meaning "the hill beside the river"	284.79	240,360	844 sq mi (2,186 km2)
Schenectady County	093	Schenectady	Mar 27, 1809	Albany County	A Mohawk word meaning "on the other side of the pine lands"	772.67	162,261	210 sq mi (544 km2)
Schoharie County	095	Schoharie	Apr 6, 1795	Albany County and Otsego County	A Mohawk word meaning "floating driftwood"	48.16	30,151	626 sq mi (1,621 km2)
Schuyler County	097	Watkins Glen	Apr 17, 1854	Chemung County, Steuben County, and Tompkins County	Philip Schuyler (1733–1804), the American Revolutionary War general and Senator from New York	50.06	17,121	342 sq mi (886 km2)
Seneca County	099	Waterloo	Mar 24, 1804	Cayuga County	The Seneca tribe of Native Americans	100.46	32,650	325 sq mi (842 km2)
Steuben County	101	Bath	Mar 18, 1796	Ontario County	Friedrich Wilhelm von Steuben (1730–1794), the Prussian general who assisted the Continental Army during the American Revolutionary War	65.54	92,015	1,404 sq mi (3,636 km2)
Suffolk County	103	Riverhead	Nov 1, 1683	One of 12 original counties created in the New York colony	The county of Suffolk in England	647.24	1,535,909	2,373 sq mi (6,146 km2)
Sullivan County	105	Monticello	Mar 27, 1809	Ulster County	John Sullivan (1740–1795), an American Revolutionary War general	80.69	80,450	997 sq mi (2,582 km2)
Tioga County	107	Owego	Feb 16, 1791	Montgomery County	A Native American word meaning "at the forks", describing a meeting place	90.96	47,574	523 sq mi (1,355 km2)
Tompkins County	109	Ithaca	Apr 7, 1817	Cayuga County and Seneca County	Daniel D. Tompkins (1774–1825), the 6th Vice President of the United States	221.85	105,602	476 sq mi (1,233 km2)
Ulster County	111	Kingston	Nov 1, 1683	One of 12 original counties created in the New York colony	The Irish province of Ulster, then an earldom of the Duke of York, later King James II of England	157.60	182,977	1,161 sq mi (3,007 km2)
Warren County	113	Queensbury	Mar 12, 1813	Washington County	Joseph Warren (1741–1775), the early American patriot and American Revolutionary War general	75.04	65,288	870 sq mi (2,253 km2)
Washington County	115	Fort Edward	Mar 12, 1772	Albany County	Originally Charlotte County, renamed in 1784 after George Washington (1732–1799), the American Revolutionary War general and first President of the United States	70.73	59,839	846 sq mi (2,191 km2)
Wayne County	117	Lyons	Apr 11, 1823	Ontario County and Seneca County	General Anthony Wayne (1745–1796), the American Revolutionary War general	65.58	90,757	1,384 sq mi (3,585 km2)
Westchester County	119	White Plains	Nov 1, 1683	One of 12 original counties created in the New York colony	The city of Chester in England	2,012.89	1,006,447	500 sq mi (1,295 km2)
Wyoming County	121	Warsaw	May 14, 1841	Genesee County	A modification of a word from the Lenape language meaning "broad bottom lands"	66.42	39,588	596 sq mi (1,544 km2)
Yates County	123	Penn Yan	Feb 5, 1823	Ontario County and Steuben County	Joseph C. Yates (1768–1837), eighth Governor of New York	64.86	24,387	376 sq mi (974 km2)

Columbia

Rensselaer

Chautauqua

Cattaraugus

Allegany

Steuben

Chemung

Tioga

Broome

Delaware

Sullivan

Ulster

Dutchess

Putnam

Westchester

Rockland

Suffolk

Nassau

Queens

Kings

Richmond

New York

Bronx

Orange

Erie

Wyoming

Livingston

Ontario

Yates

Seneca

Schuyler

Tompkins

Cortland

Chenango

Otsego

Schoharie

Albany

Greene

Schenectady

Saratoga

Washington

Warren

Niagara

Genesee

Orleans

Monroe

Wayne

Cayuga

Onondaga

Madison

Montgomery

Fulton

Oneida

Oswego

Lewis

Jefferson

Herkimer

Hamilton

Essex

St. Lawrence

Franklin

Clinton

• List of United States counties and county equivalents
• List of former United States counties
• New York State City/County Management Association

• writer, Statf (2022). "NEW YORK COUNTY GOVERNMENT OVERVIEW" (PDF). ce.naco.org. National Association of Counties (NACo). Retrieved January 3, 2025.

• "Counties" at NY.gov

This is a list of places in Nassau County, New York.^[1] Nassau County, on Long Island, became a county in the U.S. state of New York in 1899 after separating from Queens County. Included in the list are two cities, three towns, 64 incorporated villages, and 63 unincorporated hamlets whose names are used for overlapping Census-designated places (CDPs). Also included in the list are five CDPs not generally included as hamlets, and two non-CDP hamlets (East Garden City and North Woodmere). The U.S. Postal Service has organized Nassau County into 111 different five-digit ZIP Codes served by 63 different post offices.^[2] Each post office has the same name as a city, hamlet or village, but the boundaries are seldom the same.