Nassau County Records

Search for Nassau County NY county records. County records include birth certificates, death certificates, marriage records, marriage licenses, divorce records, property tax records, property ownership, historical records, genealogical research, property titles, property deeds, county maps, county taxes, county zones, school boundaries, and more.


Clerk Offices in Nassau County New York are responsible for maintaining important records for a county or local area, including multiple types of Nassau County records. These include vital records such as birth certificates, marriage records, divorce records, and death certificates, which can be useful for proving identity or for conducting genealogical research in Nassau County. They may also keep documents related to Nassau County property ownership and property taxes, including title deeds, tax assessments, property appraisals, and property sale records. The Nassau County Clerk is one of the best places to find all types of county records, which may be available online.

Brookville Clerk East Norwich NY 104 Susan Cove 11732 516-922-8198

East Rockaway Clerk East Rockaway NY 376 Atlantic Avenue 11518 516-887-6312

Glen Cove Clerk Glen Cove NY 9 Glen Street 11542 516-676-2000

Hempstead Town Clerk Hempstead NY 1 Washington Street 11550 516-489-5000

Kensington Village Clerk Great Neck NY 2 Nassau Drive 11021 516-482-4409

Malverne Clerk Malverne NY 99 Church Street 11565 516-599-0722

Matinecock Village Clerk Locust Valley NY 63 Midway Avenue 11560 516-671-7790

Nassau County Clerk Westbury NY 1200 Old Country Road 11590 516-493-3900

Nassau County Clerk Mineola NY 1550 Franklin Avenue 11501 516-571-4010

New Hyde Park Clerk New Hyde Park NY 1420 Jericho Turnpike 11040 516-354-0022

North Hempstead Town Clerk Manhasset NY 200 Plandome Road 11030 516-869-7650

North Hills Clerk Roslyn NY 1 Shelter Rock Road 11576 516-365-8857

Old Westbury Village Clerk Old Westbury NY 1 Store Hill Road 11568 516-626-0800

Oyster Bay Town Clerk Oyster Bay NY 54 Audrey Avenue 11771 516-624-6320

Oyster Bay Town Clerk Massapequa NY 977 Hicksville Road 11758 516-797-7960

Plandome Village Clerk Manhasset NY 65 South Drive 11030 516-627-1748

Valley Stream Clerk Valley Stream NY 123 South Central Avenue 11580 516-825-4200


Historical Societies in Nassau County New York are usually organized around a particular area, a group of people, or a historical event, and they preserve documents that have historic value. Nassau County Historical Societies may maintain a range of documents on individuals from that area, including Nassau County vital records such as birth and death certificates, marriage announcements, and other records that can help with Nassau County genealogical research. They may also have photographs, historical maps, historical laws, and other records for their location and the people who lived there. Historical Societies may provide online access to their Nassau County public records.

Baldwin Historical Society Baldwin NY 1980 Grand Avenue 11510 516-223-6900

Cow Neck Peninsula Historical Society Port Washington NY 336 Port Washington Boulevard 11050 516-365-9074

Floral Park Historical Society Floral Park NY 29 Tulip Avenue 11001 516-775-6849

Franklin Square Historical Society Franklin Square NY 970 Hempstead Turnpike 11010 516-352-1586

Freeport New York Historical Society Freeport NY 350 South Main Street 11520 516-623-9632

Levittown Historical Society Levittown NY 150 Abbey Lane 11756 516-434-7140

Long Beach New York Historical Society Long Beach NY 226 West Penn Street 11561 516-432-1192

Malverne Historical Society Malverne NY 369 Ocean Avenue 11565 516-887-9727

Massapequa Historical Society Massapequa NY 4755 Merrick Road 11758 516-799-2023

Matinecock Masonic Historical Society Oyster Bay NY 14 West Main Street 11771 516-802-7357

Mineola Historical Society Mineola NY 211 Westbury Avenue 11501 516-746-6722

North Hempstead Historical Society Manhasset NY 200 Plandome Road 11030 516-883-6320

Oyster Bay Historical Society Oyster Bay NY 20 Summit Street 11771 516-922-5032

Point Lookout Historical Society Point Lookout NY 23 Bellmore Avenue 11569 516-897-0324

Seaford New York Historical Society Seaford NY 3890 Waverly Avenue 11783 516-826-1150

The Garden City Historical Society Garden City NY 109 11th Street 11530 516-741-4145

The Westburys Historical Society Westbury NY 454 Rockland Street 11590 631-333-0176

Valley Stream Historical Society Valley Stream NY 143 Hendrickson Avenue 11580 516-872-4159


Treasurer and Tax Collector Offices in Nassau County New York are responsible for collecting local taxes and disbursing the funds. This can include Nassau County property taxes, business taxes, and other county or local taxes. Nassau County Treasurer and Tax Collectors maintain a number of property-related county records, including Nassau County property tax assessments, property appraisals, property ownership records, and any tax liens or foreclosures. They may also maintain Nassau County public records on property transfers and sales, including titles and deeds, which list the former and current owners as well as information on the property itself. Treasurer and Tax Collector Offices may provide online access to their county records.

Brookville Village Treasurer Glen Head NY 18 Horse Hill Road 11545 516-626-1792

Freeport Treasurer Freeport NY 46 North Ocean Avenue 11520 516-377-2261

Hempstead Village Treasurer Hempstead NY 99 Nichols Court 11550 516-489-3400

Nassau County Treasurer's Office Mineola NY 1 West Street 11501 516-571-2090


Archives in Nassau County New York preserve historically significant documents, which can include a number of county records, such as historical birth certificates and death certificates, as well as marriage and divorce records which can be useful when performing Nassau County genealogical research. Nassau County Archives may also contain photographs, historical maps, personal documents, and other historical records about a specific location and the people who lived there. They may also hold historic newspapers that contain Nassau County public records. Some Archives keep documents that date back to the seventeenth century, and they may provide online access to their records.

Cold Spring Harbor Laboratory Library and Archive Cold Spring Harbor NY 1 Bungtown Road 11724 516-367-6872


Assessor Offices in Nassau County New York determine the appraisal value of the taxable property within a county or local jurisdiction, which is used to assess the property taxes owed by Nassau County residents. Nassau County Assessors also keep a number of property-related documents, including records on property tax assessments, property appraisals, tax liens, foreclosures, and property tax payments. These Nassau County public records include information about current and former owners of a property, the property's size and location, zones and use regulations, and transfers of the property ownership. Assessors may make county records available through their website.

Freeport Assessor Freeport NY 46 North Ocean Avenue 11520 516-377-2256

Nassau County Assessor's Office Mineola NY 240 Old Country Road 11501 516-571-1500


Town and City Halls in Nassau County New York are responsible for providing municipal services for their locality. As part of this job, they may store important county records, including Nassau County vital records such as birth certificates, marriage license records, divorce records, and death certificates. These can be used as proof of identity, in applications for government services, or for performing genealogical research. The Town or City Hall in Nassau County may also keep documents on property ownership, property taxes and tax assessments, and maps for their jurisdiction that include zones, property boundaries, and school boundaries. Town and City Halls often make county records available online.

Glen Cove City Hall Glen Cove NY 9 Glen Street 11542 516-676-2000

Hempstead Town Hall Hempstead NY 350 Front Street 11550 516-489-5000

Levittown Town Hall Hicksville NY 201 Levittown Parkway 11801 516-933-6400

Long Beach City Hall Long Beach NY 1 West Chester Street 11561 516-431-1000

North Hempstead Town Hall Manhasset NY 220 Plandome Road 11030 516-869-6311

Oyster Bay Town Hall Massapequa NY 977 Hicksville Road 11758 516-797-7900

Oyster Bay Town Hall Oyster Bay NY 74 Audrey Avenue 11771 516-624-6333


Recorders of Deeds in Nassau County New York keep a range of real estate ownership documents for a county or local government as part of their job to ensure the accuracy of property, land, and Nassau County property tax records. The Nassau County Recorder's Office has county records on property ownership, transfers of property including deeds and titles, and property tax records such as property appraisals, Nassau County tax assessments, and tax liens or foreclosures. These documents contain information about the previous and current property owners, descriptions of the property, and Nassau County property sales. Recorders of Deeds may provide online access to their county records.

Nassau County Recorder of Deeds Mineola NY 240 Old Country Road 11501 516-571-1444