Listed record inventories
Selected holdings and indexes for Nassau County, checked against the repository descriptions linked below. Date spans may contain gaps; an index is not a complete set of original records.
Court records
- Minutes/Records of the Supreme Court, 1899-present · court-record survey1899-present (as described by source; confirm cutoff)
Naturalization records
Newspapers and directories
- Glen Cove sentinel. · Glen Cove · NYSL newspaper microfilm1854–1854 · scattered issues; consult exact holdings
- Plaindealer (Roslyn, N.Y.) · Glen Cove · NYSL newspaper microfilm1850–1854 · scattered issues; consult exact holdings
- Hempstead inquirer (Hempstead, N.Y. : 1859) · Hempstead · NYSL newspaper microfilm1883–1889 · scattered issues; consult exact holdings
- The Hempstead sentinel. · Hempstead · NYSL newspaper microfilm1900–1949 · scattered issues; consult exact holdings
- Newsday (Hempstead, N.Y. : Nassau ed.) · Hempstead · NYSL newspaper microfilm1964–1964 · scattered issues; consult exact holdings
- Queens County sentinel. · Hempstead · NYSL newspaper microfilm1858–1898 · scattered issues; consult exact holdings
- Nassau County gazette. · Mineola · NYSL newspaper microfilm1913–1914 · scattered issues; consult exact holdings
- Nassau County times, Willistonian and the community booster. · Mineola · NYSL newspaper microfilm1941–1943 · scattered issues; consult exact holdings
- Gold coast gazette. · Sea Cliff · NYSL newspaper microfilm1998–2007 · scattered issues; consult exact holdings
- Long Island rapper. · West Hempstead · NYSL newspaper microfilm1973–1976 · scattered issues; consult exact holdings
See the repository's descriptions and search options
Repository access note: Selected sources are linked on individual entries. NYSL newspaper dates summarize service-copy microfilm holdings, not a continuous run or the newspaper’s entire publication life; follow the link for exact issues and gaps. Court surveys describe county holdings and may require advance arrangements. Historical NYG&B microfilm listings refer to a collection transferred to NYPL; confirm current availability there. These sources do not promise online images or complete county coverage.
Sources: the catalogs and repository descriptions linked on the entries above. Selected inventories do not establish complete coverage of every record type or online access to original documents. Read the repository access note for source dates and limitations.
Where to find the records
- Nassau County official website
Hours, addresses and phone numbers for the county clerk, the surrogate's court and the town or city clerk, and any online record search the county offers.
- The county clerk
Deeds and other land records, naturalizations and court records.
- The surrogate's court
Wills, estates and guardianships.
- The town or city clerk
Births, marriages and deaths registered locally (New York City has its own vital records).
- The New York State Archives
In Albany: state records, including the state censuses, and the statewide indexes to births, marriages and deaths outside New York City.
- New York State Archivesfree
The state archives in Albany: state censuses, court and military records, and genealogical guides.
- FamilySearch Catalogfree
Search by place for "New York, Nassau" to find filmed and digitized records, many viewable free online with a FamilySearch account.
Offices change their hours and access rules; call before you visit.
Boundaries and parent counties
Formed from: Queens County
Check the parent county for earlier records: Queens County
Records stay with the county that created them. If your ancestor lived here before 1899, search the parent county. The Atlas of Historical County Boundaries shows each boundary change.
Research tip
New York took state censuses in years ending in 5 from 1825 to 1875, and in 1892, 1905, 1915 and 1925. Many survive at the county clerk's office and fill gaps between federal censuses.