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, with addresses and phone numbers.

Official sources first Free directory Links checked Sep. 13, 2026 Mobile friendly
Sponsored

Start here

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.

Filter by type

Showing 12 official sources

Everything else, organized

More official Nassau County record sources

Secondary links stay collapsed until they are needed, keeping the page useful without turning it into an endless wall of cards.

More county sources

Local record guide

About public records in Nassau County

Useful local context without burying the official record links above.

County profile

Nassau County at a glance

State
New York
County seat
Mineola
Population
1,356,924
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, Suite 450, Mineola, NY 11501 (phone: 516-571-2411, website: nassaucountyny.gov/1770/Board-of-Elections). 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 One West Street, Mineola, NY 11501 (516-571-3214). Nassau County Court, sharing facilities at the same complex, has jurisdiction over felonies and civil cases. Nassau County District Court, with locations throughout Nassau County including the main courthouse at 99 Main Street in Hempstead (516-572-2261), handles misdemeanors, traffic violations, and civil matters up to $25,000.

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?

Mugshots or booking photos in Nassau County, New York, can be obtained from the Nassau County Sheriff's Office. They may provide access to these records through their office located at 100 Carman Avenue, East Meadow, NY. Some booking photos might be available through online public records portals or by submitting a formal request to the Sheriff's Office.

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

To obtain a criminal background check in Nassau County, New York, you can request a Criminal History Record Search (CHRS) through the New York State Office of Court Administration (OCA). The process involves submitting a request online or by mail, along with the required fee. This search will provide information on any criminal records associated with the individual in question within the state of New York.

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

You can look up sex offenders in Nassau County, New York, by accessing the New York State Sex Offender Registry. This registry is maintained by the New York State Division of Criminal Justice Services and provides information on registered sex offenders living in Nassau County. You can search the registry online by name, county, or zip code to find details about offenders in your area.

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

You can register to vote in Nassau County through the New York State Board of Elections online portal at voting.ny.gov if you have a New York driver license or non-driver ID, or by submitting a paper application to the Nassau County Board of Elections at 240 Old Country Road, Suite 450, Mineola, NY 11501 (516) 571-2411). Registration must be completed at least 25 days before an election to be eligible to vote in that election. Absentee ballots can be requested online at absenteeballot.elections.ny.gov or through written application to the Board of Elections, with no excuse required under current New York law.

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

Property records in Nassau County can be searched through the County Clerk's office at 240 Old Country Road, Mineola (516) 571-2664, nassaucountyny.gov/agencies/CountyClerk), which maintains deeds, mortgages, liens, and other recorded instruments with free online access to land records dating from the 1970s forward. Property assessment and tax information is available through the Nassau County Assessment Department's online portal, searchable by address or section-block-lot number. The county also provides a free GIS mapping system at gis.nassaucountyny.gov with interactive parcel maps, aerial imagery, and property data layers. Certified copies of recorded documents can be ordered online, in person, or by mail with fees of $5 per page plus $5 certification fee.

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

Birth and death certificates for events occurring in Nassau County can be obtained from the Nassau County Clerk's office at 240 Old Country Road, Mineola, NY 11501 (516) 571-2664). The fee is $30 for the first certified copy and $15 for each additional copy of the same record ordered together. In-person requests are typically processed immediately or same-day, while mail requests take 2-4 weeks. Applicants must provide valid photo identification and demonstrate a direct and tangible interest in the record as required by New York Public Health Law Section 4174. Online ordering is available through VitalChek.com with additional service fees, or records can be requested from the New York State Department of Health Vital Records Section for events throughout the state.

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

Business certificates (DBA filings) for Nassau County are maintained by the County Clerk's office at 240 Old Country Road, Mineola (516) 571-2664) and can be searched by business name or owner name. For corporations and LLCs, use the New York Secretary of State's free online business entity search at apps.dos.ny.gov/publicInquiry to find formation documents, status, and registered agent information. Certain business licenses such as home improvement contractors are issued by the Nassau County Department of Consumer Affairs (516) 571-2600), while building permits are handled by the respective town or city building departments. Professional licenses are regulated by New York State agencies, not at the county level.