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.
Wisconsin Naturalization Records
- Adams County, Naturalization Records, 1853-1949
- Ashland County, Naturalization Records, 1879-1992
- Barron County, Naturalization Records, 1874-1906
- Barron County, Naturalization Records, 1880-1954, Indexes, 1874-1954
- Bayfield County, Naturalization Records, 1884-1945
- Brown County Citizenship Records Search 1829-1984
- Brown County, Court Minutes, 1842-1889
- Brown County, Indexes to Naturalizations, 1829-1991; Declarations of Intention, 1848-1950; Petitions for Naturalization, 1829-1948; Citizenship Order Books, 1929-1955
- Buffalo County, Naturalization Records (ca. 1853-1906) and Naturalization Card Index (ca. 1858-1950), ca. 1853-1950
- Buffalo County, Naturalization Records, 1858-1860, 1906-1950
- Burnett County, Naturalization Records, 1870-1950
- Burnett County, Naturalization Records, 1888-1958
- Calumet County Citizenship Records Search 1850-1955
- Calumet County, Naturalization Certificates, 1907-1927
- Calumet County, Naturalization Records, 1850-1954
- Central Wisconsin Genealogy and Naturalization Index
- Chippewa County, Naturalization Records, 1850-1951
- Chippewa County, Naturalization Records, 1856-1906
- Clark County, Declarations of Intention, 1892-1906 and Petitions, 1905-1906
- Clark County, Naturalization Records, 1857-1954
- Columbia County, Naturalization Records, 1845-1955
- Crawford County, Naturalization Records 1909-1950
- Crawford County, Naturalization Records, 1838-1947
- Dane County Naturalization Records, 1887-1945
- Dane County, Declarations of Intention (1875-1906) and Applications for Admission (1906) –, 1875-1906
- Dane County, Declarations of Intention, 1841-1847
- Dane County, Declarations of Intention, 1848-1906
- Dane County, Declarations of Intention, 1861-1906
- Dane County, Naturalization Records, 1887-1945
- Dane County, Admission to Citizenship Records, 1855-1906
- Dane County, Naturalization Card Index
- Dane County, Naturalization Records, 1906
- Dane County, Petitions and Oaths, 1841-1905
- Dodge County Naturalization Index Search 1844-1954
- Dodge County, Naturalization Records, 1844-1954
- Dodge County, Naturalization and Citizenship Records 1931-1954
- Dodge County, Naturalization Records 1841-1952
- Door County, Naturalization Records, 1861-1950
- Douglas County, Naturalization Records, 1852-1991
- Dunn County, Naturalization Records, 1852-1954; Naturalization Index (ca. 1859-1954)
- Eau Claire County, Naturalization Papers, 1854-1906
- Eau Claire County, Naturalizations, 1857-1991
- Florence County, Naturalizations, Declarations & Petitions, 1882-1947, Indexes, ca. 1882-1945
- Fond du Lac County, Naturalization Records, 1844-1974
- Fond du Lac County, Naturalization Records and Indexes, ca. 1844-1972
- Fond du Lac County, Naturalization Records, 1871-1974
- Fond du Lac Naturalization Index Search 1844-1974
- Forest County, Naturalization Records, 1886-1955
- Grant County, Card Index to Petitions and Repatriations, 1836-1962
- Grant County, Index to Petitions and Repatriations 1838-1962, and Naturalization Records 1907-1962,
- Grant County, Naturalization Records, 1836-1962
- Green County, Naturalization Records, 1837-1954
- Green Lake County, Naturalization Records, 1858-1949
- Green Lake County, Naturalization Records, 1858-1949
- Green Lake County, Naturalization Records, 1894-1947
- Green Lake Naturalization Index Search 1858-1949
- Illinois, Northern District Naturalization Index, 1840-1950
- Iowa County, Naturalization Records, 1835-1906
- Iowa County, Naturalization Records, 1837-1953
- Iron County, Naturalization Records, 1893-1954
- Jackson County, Naturalization Records, 1853-1963
- Jefferson County, Naturalization Records (1842-1945) and Index to Naturalizations (1849-1950) –, 1842-1950
- Jefferson County, Naturalization Records, 1877-1949
- Juneau County Naturalization Records Index
- Juneau County Naturalization Records Index
- Juneau County, Naturalization Records (1852-1929) and Indexes (1849-1957) –, 1849-1957
- Kenosha County, Addendum to Index to Naturalization 1920-1983, and Naturalization Records 1906-1982
- Kenosha County, Naturalization Records, 1884-1931; Index to Naturalization, 1852-1964
- Kent County, Naturalization Petitions, 1793-1958
- Kewaunee County Citizenship Records Search 1850-1950
- Kewaunee County, Naturalization Records, 1850-1948
- La Crosse County, Index to Naturalizations, 1860-1990
- La Crosse County, Naturalization Records, 1906-1990
- La Crosse County, Naturalization and Citizenship Records, 1850-1950
- La Crosse, Declarations of Intention Records, 1872-1924
- Lafayette County, Card Index to Petitions, 1847-1954
- Lafayette County, Citizenship Index, Register, Certificates, Orders and Decrees, 1847-1935
- Lafayette County, Naturalization Records, 1847-1954
- Langlade County (Wisconsin, Naturalization Records, 1881-1954
- Lincoln County, Naturalization Records (1872-1948) and Indexes (1976-1958) –, 1872-1958
- Manitowoc County Citizenship Records Search 1848-1955
- Manitowoc County, Naturalization Records, 1848-1955; Indexes, 1855-1954
- Marathon County, Naturalizations, 1850-1991
- Marinette County, Naturalization Records (1879-1980) and Indexes (1879-1982)
- Marquette County, Naturalization Records, 1848-1949
- Marquette County, Naturalization Records, 1848-1949
- Marquette Naturalization Index Search 1848-1949
- Milwaukee Naturalization Index and Repatriations Books, 1848-1990
- Milwaukee Naturalization Index, 1848-1990
- Milwaukee Petitions for Naturalization, 1848-1991
- Milwaukee, Petitions to Naturalization, 1848-1991
- Monroe County, Naturalization Records, 1846-1946
- Oconto County, Naturalization Records and Indexes, 1857-1952
- Oneida County, Naturalization Records 1906-1951, and Indexes 1891-1954
- Oneida County, Naturalization Records, 1887-1906
- Outagamie County Citizenship Records Search 1852-1963
- Outagamie County, Index to Certificates and Petitions, 1853-1963 and Declarations of Intention 1852-1963
- Ozaukee County, Naturalization Records, ca. 1853-1920
- Pepin County Naturalization Index
- Pepin County, Naturalization Records 1859-1944; Index to Citizenship ca. 1880-1915
- Pierce County, Naturalization Records, 1854-1963
- Polk County, Naturalization Card Index
- Polk County, Naturalization Records 1859-1954
- Polk County, Naturalization Records, 1859-1906
- Portage County Naturalization Index
- Portage County, Naturalization Index
- Portage County, Naturalization Records, 1844-1956
- Price County, Naturalization Records, 1882-1954
- Racine County, Declarations of Intention Index 1880-1905 and Naturalization Records 1904-1958,
- Racine County, Naturalization Records, 1837-1906; Card Index to Naturalizations, 1838-1945
- Richland County, Card Index to Petitions and Certificates, 1861-1946
- Richland County, Naturalizations, 1860-1946
- Ripon, Declarations and Petitions, ca. 1845-1906
- Rock County, Naturalization Records, 1839-1959
- Rock County, Naturalization Records, 1839-1982
- Rusk County, Naturalization Records, 1871-1954 and 1871-1947 Index
- Sauk County, Naturalization Records, 1844-1955
- Sawyer County, Naturalization and Citizenship Records 1906-1954
- Sawyer County, Naturalization Records, 1885-1954
- Shawano County Extract of Naturalization Records, 1859-1929
- Shawano County, Naturalization Records, 1861-1949
- Sheboygan County, Naturalization Records, ca. 1851-1982
- St. Croix County, Naturalization Card Index
- St. Croix County, Naturalization Records 1849-1952
- St. Croix County, Naturalization Records, 1850-1906
- Taylor County, Naturalization Records, 1906-1955
- Taylor County, Certificates of Citizenship, 1903-1906; Petition for Citizenship, 1903- 1906; Index to Citizenship, 1860-1953
- Taylor County, Certificates of Naturalization, 1877-1906; Index to Certificates of Naturalization, 1879-1902, 1877-1906
- Taylor County, Declarations of Intention and Index, 1875-1906
- Trempealeau County, Naturalization Records (1852-1953) and Indexes (1852-1926)
- Vernon County, Naturalization Records, 1853-1947
- Vilas County, Naturalization Records, 1893-1948
- Walworth County, Declarations of Intention 1937-1954, Petitions 1906-1948, Orders Granting and denying Citizenship 1830-1955
- Walworth County, Naturalization Records, 1840-1943; Index to Citizenship, 1906-1955
- Washburn County, Naturalization Records, 1878-1911
- Washburn County, Naturalization Records, 1880-1954
- Washington County, Index to Naturalizations, 1845-1980
- Washington County, Naturalization Records 1904-1959
- Washington County, Petitions for Naturalization and Declarations of Intention, 1845-1906
- Waukesha County, Naturalization Records, 1847-1955
- Waupaca County, Naturalization Records, 1853-1948
- Waushara County Naturalization Record Index
- Waushara County, Naturalization Records, 1852-1949
- Winnebago County, Naturalization Records, 1844-1963
- Winnebago County, Naturalization Records, 1934-1949
- Winnebago County, Naturalization Records, 1848-1961
- Winnebago Naturalization Index Search 1844-1963
- Wisconsin Counties Naturalization Records Indexes
- Wisconsin Index to Naturalization Petitions, 1848-1990
- Wisconsin Naturalization Records, 1876-1928
- Wisconsin Records from Illinois, Northern District Naturalization Index, 1840-1950
- Wisconsin Records from Illinois, Northern District Naturalization Soundex Index, 1840-1950
- Wisconsin, County Naturalization Records, 1807-1992
- Wisconsin, Index to Citizenship
- Wisconsin, Index to Naturalization Petitions, 1848-1990
- Wisconsin, Naturalization Records, 1840-1900
- Wood County, Naturalization Records (1853-1981) and Indexes (1906-1991), 1853-1991
Good Luck and Happy Hunting!