The Ancestor Hunt regularly adds and updates new collection links, as well as searches for and fixes broken links.
(This page's most recent update is January 2025)
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Do you research naturalization records? No? Why not? Does the thought of going through paper files in dusty court basements turn you off? Well – I’m here to tell you that it is worth it – and with recent digitization efforts – more and more original documents have been scanned and made available via microfilm or online.
Some of the larger subscription sites have also made some source documents available – as well as index cards that can lead you to the court that handled the proceedings.
If you wish to get educated first about all of these documents and the naturalization process and how it has changed over time – please read these two terrific summaries:
- The U.S. Archives Naturalization Records
- FamilySearch’s Wiki entry United States Naturalization and Citizenship
- Women and Naturalization
Okay – now that you are educated and know that post-1906 – about 4 awesome documents just drip with great information: Declaration of Intent, Petition for Citizenship or Naturalization, Certificate of Arrival, and the Certificate of Naturalization. Many of the online genealogy websites may not have all of these documents available but do have index cards that are searchable – which have information regarding the court handling the proceedings. With this information, you might be able to track down some of the source documents.
Below is a list of links to free online naturalization record and index collections for the state:
Note: Some links listed take you to a FamilySearch Collection of digital images. Near the bottom of the page under Film/Digital Notes is the name of each sub-collection. If there is a camera icon at the right of the name (in the Format column) then the collections’ images are browsable. If there is a camera with a key icon, it is only available at a Family History Center or affiliated library. If there is a film reel icon, then it is only available in microfilm format, not digital. To take full advantage make sure that you are logged in to FamilySearch. The results may be different if you are signed in, rather than not.
New Jersey Naturalization Records
- Atlantic County Digitized Immigration Records and Declarations of Intentions
- Atlantic County Declarations of Intention, 1883-1925
- Atlantic County Naturalization Records, 1837-1929
- Bergen County Alien Declarations, 1808-1895
- Bergen County Naturalization Papers, 1804-1906
- Bergen County Naturalization Papers, 1895-1906
- Burlington County, Fort Dix Military Base, Naturalization Records, 1914-1946
- Camden County, Naturalization Records, 1932-1982
- Cape May County Naturalization Records, 1805-1908
- Cape May County Naturalization Records, 1896-1962
- Essex County Declarations of Intention, 1849-1906
- Essex County Facts for Declaration of Intention, 1872-1906
- Essex County Miscellaneous Naturalization Papers, 1816-1901
- Essex County Naturalization Papers, 1779-1888
- Essex County Naturalization Papers, 1848-1906
- Essex County Petitions for Naturalization, 1850-1906; Indexes to Naturalization Records, 1830-1906
- Essex County, Newark, Certificates of Naturalization Stubs, 1914-1926
- Essex County, Newark, Declarations of Intentions, 1927-1950
- Essex County, Newark, Repatriation Oaths of Allegiance, 1921-1970
- Essex County, Transfer Petitions 1953-1980; Overseas Military Petitions, 1942-1956, Military Petitions 1918-1946, 1914-1982
- Gloucester County Naturalizations, 1808-1926
- Hudson County Declarations of Intention, 1877-1895
- Hudson County Naturalization Duplicates Filed out of Order, 1840-1892
- Hudson County Naturalization Papers, 1834-1907
- Hunterdon County Declarations of Intention, 1871-1906
- Hunterdon County Naturalization Petitions, 1871-1906
- Hunterdon County Naturalization Records, 1803-1876
- Hunterdon County Naturalization Records, 1808-1809
- Mercer County Index to Petitions for Naturalization 1903-1906
- Mercer County Declarations of Intention, 1868-1906
- Mercer County Naturalization Records, 1838-1906
- Mercer County Record of Depositions, 1919-1926
- Mercer County, Naturalization Records, 1796-1987
- Mercer County, Trenton, Declarations of Intentions, 1913-1950
- Middlesex County Declarations of Intention, 1887-1906
- Middlesex County Naturalization Papers, 1798-1906; Index to Naturalization, 1832-1906
- Monmouth County Naturalization Transfers, 1957-1983
- Monmouth County Naturalizations Women’s Applications for Oaths, 1941-1966
- Monmouth County Naturalizations WWI Military Petitions, 1918-1919
- Monmouth County Naturalizations, 1804-1906
- Monmouth County Naturalizations, 1907-1991
- Morris County Declarations of Intention, 1834-1908
- Morris County Naturalization Applications Withdrawn, 1895-1906
- Morris County Naturalization Records, 1804-1906
- New Jersey Naturalization Records Index
- New Jersey Naturalization Records, 1796-1991
- New Jersey, Camden Naturalization Record Index Search, U. S. District Court, 1933-1981
- New Jersey, County Naturalization Records, 1749-1986
- New Jersey, Naturalization Records
- New Jersey, Naturalization Records from Various Counties, 1905-1944
- New Jersey, Newark Naturalization Record Index Search, U. S. District Court, 1914-1983
- New Jersey, Trenton Naturalization Record Index Search, U. S. District Court, 1919-1987
- New Jersey, Guide to Naturalization Records
- New Jersey, Petitions for Naturalization from the U.S. District Court for the District of New Jersey at Newark, 1914-1945
- New Jersey, Records of the U. S. District Court of New Jersey and predecessor Courts: 1789-1950
- Ocean County Declarations of Intention, 1850-1906
- Ocean County Naturalizations Completed, 1857-1906
- Passaic County Naturalization Index Search
- Passaic County Declarations of Intention Papers, 1837-1870
- Passaic County Declarations of Intention, 1873-1906
- Passaic County Naturalization Papers, 1837-1906
- Passaic County Naturalizations refused, 1895-1906
- Passaic County Old First Papers, ca. 1870-1904
- Passaic County Second Papers not good, ca. 1895-1906
- Salem County Minutes, 1834-1911
- Salem County Naturalization Records, 1808-1906
- Salem County Naturalization Records, 1888-1960
- Somerset County Declarations of Intention, 1809-1922
- Somerset County Naturalization Petitions, 1830-1906
- Sussex County Court Records, 1778-1902
- Union County Declarations of Intention, 1857-1928
- Union County Naturalization Certificate Stubs: 1914-1930
- Union County Naturalization Petitions, 1857-1906
- Union County Petition and Record: 1906-1987
- Warren County Naturalization Papers and Petitions, 1825-1906
Good Luck and Happy Hunting!