Online New York Naturalization Records and Indexes

Online New York Naturalization Indexes and Records
Note that the New York City listings may also include counties ouside of NYC.

Albany County Naturalizations 1821-1991
Cayuga County Naturalization Records Index 1799-1952 PDF file
Clinton County Naturalization Records Index 1865-1906
Delaware County Naturalization Records
Dutchess County, New York Naturalization Records 1932-1989 (at Ancestry/requires payment)
Erie County (Buffalo) and Monroe County (Rochester)...
- Western District of New York Index to Naturalization Petitions, U.S. District Court, 1907-1966 at Fold3 (formerly Footnote)
  - Alphabetical Index to Petitions for Naturalizations of the U.S. District Court for the Western District of New York, 1907-1966 searchable, scanned index cards from NARA microfilm publication M1677 (searches are free - requires payment for digitized copies of the index cards) for Buffalo and Rochester
Essex County Naturalization Records Index 1836-1906
Long Island: see the Eastern District indexes listed below
Madison County Naturalization Records 1819-1953
Monroe County (Rochester): see the Erie County section above
Nassau County Naturalization Project 1899-1986
Nassau County: also see the Eastern District of New York section below
New York City...
Note: there are a variety of courts in NYC where naturalizations took place -- you may have to check more than one index -- and some indexes may not yet be online
- New York City Naturalization Indexes at Ancestry (these require payment):
  - New York Petitions for Naturalization Index 1792-1989 includes digitized images of the index cards - has over 2 million records from all 5 New York City boroughs
  - New York County Supreme Court Naturalization Petition Index, 1907-1924 (Manhattan)
  - Index to Declaration of Intent for Naturalization: New York County, 1907-1924 (Manhattan) has nearly 675,000 listings
  - The above 3 databases (and Ancestry's Southern District database listed just below) are included in a subscription to Ancestry's U.S. genealogy records collection
- Southern District of New York - Manhattan and the Bronx; also: Columbia, Dutchess, Greene, Orange, Putnam, Rockland, Sullivan, Ulster and Westchester Counties
  - Scanned Records - Southern District...
    - Petitions for Naturalization From the U.S. District Court for the Southern District of New York, 1897-1944 (at Ancestry/requires payment) indexed; includes images from NARA Microfilm Publication M1972
    - Petitions for Naturalization of the U.S. District Court for the Southern District of New York, 1897-1944 (at Fold3) scanned documents from National Archives Microfilm M1972 - searchable by name (requires payment for full results) database is 60% complete
  - Scanned Indexes - Southern District...
    - Southern District Court of New York Naturalization Records Index 1824-1959
    - Index to Declarations of Intention of the U.S. District Court, Southern District of New York, 1917-1950 (at Fold3) (searches are free - you can view scanned copies of the index cards for a fee) from National Archives Microfilm Publication M1675
    - Index to Petitions of Naturalization of the US District Court, Southern District of New York, 1824-1941 (at Fold3) (searches are free - you can view scanned copies of the index cards for a fee) from National Archives Microfilm Publication M1676
- Eastern District of New York - Brooklyn, Queens and Staten Island; also: Nassau and Suffolk Counties
  - Scanned Records - Eastern District...
    - Petitions for Naturalization of the U.S. District Court for the Eastern District of New York, 1865-1937 at Fold3 scanned documents from National Archives Microfilm M1879 - searchable by name (requires payment for full results) database is 96% complete
  - Scanned Indexes - Eastern District...
    - Eastern District of New York Index to Naturalization Petitions, U.S. District Court, 1865-1957 at Fold3 for Kings (Brooklyn), Nassau, Queens, Richmond (Staten Island), and Suffolk Counties (scanned index cards from National Archives microfilm publication M1164; searchable by name; searches are free - requires payment for digitized copies of the index cards)
    - Eastern District Court of New York Naturalization Index Project 1865-1956 includes Kings (Brooklyn), Queens, Richmond (Staten Island), Nassau & Suffolk Counties
- Bronx County Naturalization Index Project 1914-1952
- Bronx County: also see the Southern District of New York section above
- Kings County (Brooklyn) Naturalization Index 1907-1924
- Kings County: also see the Eastern District of New York section above
- Queens County Naturalization Index 1906-1957
- Queens County: also see the Eastern District of New York section above
- Richmond County Naturalization Database 1883-1959 coverage varies by type of document
- Richmond County (Staten Island): also see the Eastern District of New York section above
Ontario County...
- Ontario County Naturalizations 1803-1906
- Ontario County Naturalizations 1906-1956
Rensselaer County Naturalization Records (partial index)
Rockland County Naturalization Database 1812-1996
- To order copies of the records from the above index see: Rockland County Archivist Naturalizations
Suffolk County Naturalization Index 1853-1990
Suffolk County: also see the Eastern District of New York section above
Ulster County Naturalization Record Collection Index Search (not complete)
Warren County...
- Warren County Naturalization Papers Index 1813-1906
- Warren County, New York Naturalization Petitions 1907-1955
  - To order copies of items from the above two indexes see: Warren County Records Storage Center & Archives
Westchester County Archives Naturalization Records Index 1808-1928 (1929-1955 is being worked on)
Yates County Naturalization Index

Misc New York Naturalization Indexes includes...
- Western District Federal Court Naturalization Index: for Allegany, Cattaraugus, Chautauqua, Chemung, Erie, Genesee, Livingston, Monroe, Niagara, Ontario, Orleans, Schuyler, Seneca, Stuben, Wayne, Wyoming and Yates Counties; covers 1903-1966 for petitions; also indexes other naturalization documents
- United States Circuit Court for the Southern District of New York Naturalizations Index 1846-1876 and 1906-1911
- The New York Military Naturalization Project (naturalizations of military personnel for both World Wars & the Korean War)

For Help in Researching New York Naturalization Records Offline See...
- Finding USA Naturalization Records
- Microfilmed Index to New York Naturalization Petitions 1792-1906 for various New York courts

May Be Helpful for Researching Early NY Records...

BOOK: Early New York Naturalizations: Abstracts of Naturalization Records from Federal, State, and Local Courts, 1792-1840 by Kenneth Scott (GPC, published 1999); includes about 10,000 total entries; You can click on the title for ordering information

Other New York Genealogy Resources...

Online New York Death Records & Obituaries - Indexes for New York City & State

Online New York Birth and Marriage Records Indexes

Online Searchable New York Naturalization Records and Indexes