The Online New York Naturalization Records Guide has two pages:
New York City Naturalization Records (this page) and New York State Naturalization Records (next page)
Online New York City Naturalization Records and Indexes
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. Some of these New York City listings may also include counties ouside of NYC.
Other New York Genealogy Resources...
- New York City Naturalization Indexes and Records at Ancestry (these require payment):
- 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...
- Scanned Indexes - Southern District...
- Eastern District of New York - Brooklyn, Queens and Staten Island; also: Nassau and Suffolk Counties
- Scanned Records - Eastern District...
- 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 1914-1952 and Queens County Naturalization Index mid 1800s-1957
- 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: 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