New York, county records

Nassau County, New York Public Records

Find the right office in Nassau County. Court cases, deeds and parcels, sheriff and jail records, vital records and county filings, each linked to the office that keeps them.

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Most requested Nassau County records

Every card below goes to the government office responsible for that record. Use the category buttons to narrow the list.

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Showing 11 official sources

Official

Police & jail

Nassau County Sheriff's Office

The Nassau County Sheriff's Office is the county's law enforcement agency and holds its arrest records, incident and accident reports and the roster of people held in the county jail.

nassaucountyny.gov
Open official site Nassau County Sheriff's Office
Official

City records

Nassau County Library

The Nassau County public library gives readers its catalogue, its online databases and the local history and genealogy collections it holds for the county.

nassaulibrary.org
Open official site Nassau County Library

Everything else, organized

More official Nassau County record sources

35 more Nassau County sources not listed above.

More county sources

Local record guide

About public records in Nassau County

The historic Nassau County Courthouse in Mineola in 1917, from the Bain News Service collection
The historic Nassau County Courthouse in Mineola in 1917, from the Bain News Service collection.Library of Congress Prints and Photographs Division, LC-B2- 4055-17 [P&P]. No known restrictions on publication. See the catalog record for the full statement.

County profile

Nassau County at a glance

State
New York
County seat
Mineola
Population
1,395,774
Area
453 sq mi
Founded
1899
Cities and towns
64

Nassau County offices and records

Sheriff & Law Enforcement. Nassau County Sheriff's Office is responsible for maintaining law and order within Nassau County's jurisdiction.

Police Departments. These agencies coordinate with the Sheriff's Office on major crimes and emergencies, making sure of full coverage and response across Nassau County.

Law Enforcement & Arrests. Nassau County Police Department (NCPD) is one of the largest police agencies in New York State, serving the unincorporated areas and most villages within Nassau County, with headquarters at 1490 Franklin Avenue in Mineola.

Criminal Records. These records are maintained by Nassau County Police Department, the Sheriff's Office, and the New York State Division of Criminal Justice Services. Residents can conduct background checks through the New York State Office of Court Administration, which provides statewide criminal history record searches for a fee.

Arrest Records. Arrest records in Nassau County are maintained by Nassau County Police Department and the Sheriff's Office.

Mugshots & Booking Photos. Mugshots in Nassau County are taken and retained by Nassau County Sheriff's Office during the booking process at Nassau County Correctional Center. These images are part of the arrest records and can be accessed through a formal request to the Sheriff's Office.

Elections in Nassau County are administered by Nassau County Board of Elections, located at 240 Old Country Road, 5th floor, Mineola, NY 11501, phone 516-571-2411. Nassau County Department of Consumer Affairs (516-571-2600) licenses certain businesses including home improvement contractors, peddlers, and second-hand dealers. Property and land records in Nassau County are maintained by the County Clerk's office, which is the Register of Deeds, located at 240 Old Country Road, Mineola, NY 11501 (phone: 516-571-2664, website: nassaucountyny.gov/agencies/CountyClerk). Nassau County's court system includes multiple levels of jurisdiction. The Supreme Court of the State of New York, Nassau County, located at 100 Supreme Court Drive in Mineola (516-571-2905), handles major civil matters and felony criminal cases. Older records may require in-person research or assistance from county staff. Property tax assessment information is maintained separately by Nassau County Assessment Department at 240 Old Country Road, 4th floor, Mineola, NY 11501, phone 516-571-1500. Nassau County Court, sharing facilities at the same complex, has jurisdiction over felonies and civil cases. The Nassau District Court at 99 Main Street, Hempstead, NY 11550, phone 516-493-4200, handles its assigned criminal and traffic proceedings and civil matters up to $15,000; its small-claims limit is $5,000.

Abandoned mine records

Old mine workings in Nassau County

Where the workings are, and the office that holds the mine maps.

From the old mine records

What is on record in Nassau County

Old mine sites
5
Past producers, now closed
4
Prospects and occurrences, never worked
1
Producing when recorded
1
Processing plants, not workings
3
Main minerals
construction sand and gravel; Wollastonite
Holes drawn on the old survey maps
53
Shafts and tunnels
0
What they are
open pit mine or quarry, gravel pit, sand pit, sand and gravel pit
Maps surveyed
1947 to 1969

Is an old working under a property here?

The mine records hold 9 mine sites inside the county: 4 past producers, now closed, 1 prospect or occurrence that was never worked, 1 site producing when the record was made, 3 processing plants, which are not workings; the old survey maps add 53 holes drawn inside the county, 0 of them shafts or tunnels. The minerals the records name are construction sand and gravel; Wollastonite.

A point in either file is a location, not a property line: the sheet shows the opening on the surface, not the rooms under it. The record that shows what runs under a parcel is the mine map. The OSMRE National Mine Map Repository holds scanned underground mine maps and answers requests for a named mine or an area. New York has no coal AML program; the DEC database covers permitted mines, not historic underground workings.

Queens County Bronx County Kings County Old Westbury Levittown Hicksville Glen Cove Muttontown Garden N 10 miles
Nassau County: the boundary from the Census Bureau, and one dot for each old mine or hole on record inside it. The purple dots come off the old survey maps and the darkest of those are shafts and tunnels; the red, green and orange ones are mine records. The small open circles with a name are the towns and the pale shapes around the edge are the neighbouring counties, both from the Census Bureau. Hover a dot for its name.
New York mine map and abandoned mine records
Named workings recorded in Nassau County (16 shown, 46 unnamed on the map)

New York abandoned mine maps ranks every county and town in the state by the workings recorded inside it, names the office that holds the mine maps, and says what to do if the ground moves.

Disclaimer: The mine information here is for general information only. Old mine records can be incomplete, outdated or wrong, and finding nothing here does not mean there is nothing there. Check with the mine map office named here before you rely on it, and have a qualified engineer look at any ground you are worried about. PublicRecordCenter.com assumes no responsibility or liability for any errors, omissions, or consequences arising from the use of this information.

Know before you ask

Nassau County records: the figures and the rules

Each figure below was read on the official source linked beside it, October to November 2026. A fee or rule the source does not state is left out rather than guessed, and offices can change their schedules, so confirm on the source before you pay or travel.

What copies cost

Certified deed copy
$10 per certified deed copy, including listed USD 5 search charge.source
State criminal history check, name based
$95 OCA CHRS search, with separate transaction convenience charge; exact name and birth-date matchingsource

Deadlines and the law

Public records response time
5 business days for initial grant, denial or acknowledgment; production may follow on an estimated date.source
Written request required
Yessource
Purpose must be stated
Nosource
The law behind it
New York Freedom of Information Law, Public Officers Law Article 6; section 89 governs initial response.source

Who holds what

Deeds and recording
Nassau County Clerk.source
Property assessment
Nassau County Department of Assessment.source
Jail and inmate records
Nassau County Sheriff's Department, Correctional Center.source

Nassau deed copies, municipal certificates and court files

Start a deed request with the parcel reference

The County Clerk's deed-copy instructions use the section, block and lot to locate the instrument. A certified deed copy costs $10 including the listed $5 search charge. The office distinguishes document retrieval from recording a new transfer; do not apply a deed-copy amount to mortgage recording or transfer taxes.

Town and city records remain separate

The Clerk's vital-record guidance directs birth and death requests to the municipality where the event occurred and marriage requests to the office that issued the license. The county's historical marriage collection covers 1907 through April 29, 1935. Authentication of a municipal signature is a different service from issuing the underlying certificate.

A certified divorce request has access conditions

The Clerk divorce request form requires the specified party or attorney eligibility and a notarized mailed application. Certified copying costs $1.25 per page, with a $5 minimum and $40 maximum; include the required cover page. A missing index number adds the listed $5 search charge. Its stated processing window of up to 4 weeks concerns this court-copy service, not local birth certificates.

Use the current court division and location

The Nassau court directory places Family and Matrimonial Center operations at 101 County Seat Drive following the June 2, 2025 move. An old Westbury Family Court address should not direct a new visit. Check the assigned division and floor when the case concerns family or matrimonial proceedings.

The District Court listing gives a $15,000 civil limit and a separate $5,000 small-claims limit. These are jurisdiction descriptions, not fees. Its case-type instructions identify the departments handling civil and other District Court matters.

Assessment, elections and detention

The Assessment Department publishes its office on the fourth floor of 240 Old Country Road. The Board of Elections is on the fifth floor of the same building; record types still require separate requests. The Sheriff's Correctional Center is in East Meadow, not in that county-office building.

For ordinary administrative records, follow New York FOIL and the responsible agency's submission route. A court-copy application and a restricted certificate request use their own eligibility rules. The New York guide lists state services for requests beyond the county.

Where to go

Nassau County offices that hold the records

Each office below was read on its own site. A field the office does not publish is left out rather than filled in from a directory.

County Clerk

Land records, Supreme Court copies and specified historical marriage records.

Address
240 Old Country Road, Mineola, NY 11501; divorce-copy processing Room 105A
Phone
516-571-2664
Hours
Monday to Friday 9 a.m. to 4:30 p.m.; copy processing ends 30 minutes before closing

Office page: nassaucountyny.gov

Assessment Department

Property assessments and related requests.

Address
240 Old Country Road, 4th floor, Mineola, NY 11501
Phone
516-571-1500
Hours
Monday to Friday 8 a.m. to 4:30 p.m

Office page: nassaucountyny.gov

Board of Elections

Voter and election records.

Address
240 Old Country Road, 5th floor, Mineola, NY 11501; mail P.O. Box 9002
Phone
516-571-8683 or 516-571-2411
Hours
Monday to Friday 9 a.m. to 5 p.m

Office page: nassaucountyny.gov

District Court

District civil, criminal and small-claims proceedings.

Address
99 Main Street, Hempstead, NY 11550
Phone
516-493-4200; civil 516-493-4113
Hours
Monday to Friday 9 a.m. to 5 p.m.; court advises starting business by 4:30 p.m

Office page: nycourts.gov

Family and Matrimonial Center

Family and matrimonial court operations at the location effective June 2, 2025.

Address
101 County Seat Drive, Mineola, NY 11501; Family on floors 1 and 2, Matrimonial on floor 3
Phone
District administrative contact 516-493-3000; not certified here as the division records phone

Office page: nycourts.gov

Surrogate Court

Probate and estate files.

Address
262 Old Country Road, Mineola, NY 11501
Phone
516-493-3800

Office page: nassaucountyny.gov

Sheriff Correctional Center

County detention; visiting and inmate-service contacts.

Address
100 Carman Avenue, East Meadow, NY 11554
Phone
516-572-3765 or 516-572-4600 for listed visiting contacts

Office page: nassaucountyny.gov

Labor Department file

Wage and hour cases in Nassau County

The U.S. Department of Labor's Wage and Hour Division closed 2,578 investigations in Nassau County since fiscal 2005 and recorded $60,531,417 in back wages agreed for 33,757 workers. The county is the one the Census Bureau puts each employer's ZIP code in. Snapshot of April 22, 2026; a case here is a finding by the Division, not a court judgment.

Investigations closed
2,578
Back wages agreed
$60,531,417
Workers due back wages
33,757
Civil money penalties
$4,865,531
Employers on the record
2,130
EmployerCityCasesBack wagesWorkers
Valucare, Inc.Hempstead2$1,633,169473
Total Healthcare Staffing of Long Island, IncBellmore1$1,304,911397
Chad Brown Racing Stables Inc.Elmont2$1,206,299236
FML Construction Corp.Carle Place4$837,12537
Jopal Bronx, LLCWoodbury1$744,000287
Modern Events Corp.Locust Valley1$662,8670
Discover Electric, Inc.Rockville Centre1$594,30611
Westbury FishWestbury2$541,23328
Westbury Manor Enterprises, Inc.Westbury1$503,151632
The New Fulton Commons Company, LLCEast Meadow1$494,365172
New York Health Care, Inc.Valley Stream2$464,307725
Nassau County Department of Public WorksWestbury1$460,609345
UPR Care Corp.Woodbury1$457,087392
Cullum Contracting CorpPlainview2$450,94915
Erin Construction & Development Co., Inc.New Hyde Park1$444,14115
Harold Levinson Assoc. Inc.Plainview1$423,82493
Garrison Protective ServicesMassapequa1$376,114314
Sampogna Group, IncWestbury2$367,24091
All Metro Home Care Service of New York, Inc.Valley Stream7$342,981960
Mediterranean Zona INCMassapequa Park1$342,18733
Mahender and Varsha SabhnaniGlen Head1$339,9332
Scotto Brothers Restaurant Westbury, Inc.Westbury1$336,324549
I Q Systems,IncNew Hyde Park1$320,46030
Kde Equine LLCElmont2$301,297200
City of Long Beach Police DepartmentLong Beach2$300,08615

The 25 employers with the most back wages agreed, of 2,130 on the Nassau County record; 969 employers have a page of their own and open from the table, the rest show their whole record here. The 2,105 more with smaller records are on the New York wage theft records page, whose search answers for every employer in the state.

Straight answers

Nassau County public-records FAQs

Open only the answer you need.

Where can I find mugshots or booking photos in Nassau County, New York?

Booking photos are kept by the agency that made the arrest, such as the Nassau County Sheriff or a city police department in Nassau County. Ask that agency for its record. Under New York Public Officers Law 89(2)(b)(viii), releasing law enforcement arrest or booking photographs is an unwarranted invasion of personal privacy unless public release will serve a specific law enforcement purpose and no state or federal law bars it.

How do I get a criminal background check in Nassau County, New York?

The New York criminal history record comes from the New York State Division of Criminal Justice Services (DCJS). Fingerprint based Record Review only: book an IdentoGO fingerprint appointment online or at 877-472-6915 with service code 15464Z (suppressed record) or 15465F (unsuppressed record); DCJS mails the rap sheet or a no record response. Fee: $17.50 (as of 2/2/2026) for New York residents fingerprinted at IdentoGO; $57.45 for those living outside New York State.

How can I look up sex offenders in Nassau County, New York?

Search the New York State Sex Offender Registry (DCJS), or every state at once on the National Sex Offender Public Website run by the U.S. Department of Justice.

How do I register to vote in Nassau County, New York?

Register with the county board of elections (Board of Elections in the City of New York) or through the New York State Board of Elections. You can also register online with the state online registration. For the November 3, 2026 general election, registration applications must be received by October 24, 2026.

How do I look up property records in Nassau County, New York?

Deeds and other recorded land documents in Nassau County are kept by the Nassau County clerk. Property values are set by the city, town or village assessor, and tax bills come from the town or city tax collector. Source: official state page.

How do I get a birth or death certificate in Nassau County, New York?

Certified birth and death certificates for New York come from the New York State Department of Health, Vital Records (all of the state except New York City). Birth and death records are also available from the local Registrar of Vital Statistics where the event occurred; New York City births and deaths come from the New York City Department of Health. By mail to New York State Department of Health, Vital Records Certification Unit, P.O. Box 2602, Albany, NY 12220-2602, or online or by phone through VitalChek Network, the independent company the Department has partnered with. Fee: $30 per copy by mail; $45 per copy online or by phone, plus a vendor processing fee per order.

How do I find business license records in Nassau County, New York?

Business entity filings are searched with the New York Department of State, Division of Corporations.

What information helps the Nassau Clerk find a deed?

The deed-copy instructions call for the section, block and lot. A certified deed copy costs $10 including its listed $5 search charge; new recording fees are a different product.

Does the Nassau Clerk issue municipal birth and death certificates?

The Clerk vital-record guidance sends those requests to the municipality where the event occurred. A county authentication of a signature does not replace the certificate itself.

Should I order a Nassau marriage copy where the ceremony occurred?

The record-custodian instructions direct the request to the office that issued the license. The county also identifies its separate historical marriage holdings for 1907 through April 29, 1935.

Does a Nassau divorce copy request require the index number?

The request form asks for it and lists an additional $5 search charge if it is absent. The form also specifies eligibility, notarization and copy charges.

Where did Nassau Family and Matrimonial Center operations move?

The court directory identifies 101 County Seat Drive, Mineola, for the move effective June 2, 2025. Confirm the court division and floor before a visit.

Is the Nassau District Court civil limit $25,000?

The current court listing states $15,000 for civil matters and a separate $5,000 small-claims limit. Use the appropriate court and case category.

Are Nassau assessment and election records at the same counter?

No. The Assessment Department occupies the fourth floor at 240 Old Country Road. The Board of Elections has its own office and record responsibilities.

Do the Nassau jail visiting hours describe a records-counter schedule?

The Correctional Center publishes visiting sessions for its East Meadow facility. Those hours should not be reused as a general public-records counter schedule.