This is a list of Wisconsin Naturalization Records online and Wisconsin Citizenship Records online and may include declarations of intent, petitions for naturalization, oaths of allegiance, certificates of citizenship, passports, and more.

These records often provide names and aliases of a person, age, country of birth, ethnic background, date and port of arrival, the name of the ship, previous residences, or current address.

You can look at federal (1870-1920) census records to see if your ancestor was naturalized. See Wisconsin Census Records online for census record links and other helpful genealogy resources.

TIP – Login with your free FamilySearch account to unlock some collections — see other tips for opening FS resources.

KEY to collections

FS=FamilySearch FREE but login with your free account to access
Anc$=Ancestry – fee site
MH=MyHeritage – fee site
AG – AccessGenealogy
GTHG – Genealogy Trails History Group
IA – Internet Archive
RW – RootsWeb
SAM – Sampubco.com
UWGB – University of Wisconsin Green Bay
UWML – University of Wisconsin-Madison Libraries
WHS – Wisconsin Historical Society

US Naturalization Records online with Wisconsin residents

US – U.S. Naturalization Records, at MH $

US – see Naturalization Records at US Genealogy Records Online at MyHeritage, at MH $

US – Passenger and Immigration Lists, 1500 – 1900, at MH $

US – see Passenger Lists at US Genealogy Records Online at MyHeritage, at MH $

Wisconsin Naturalization Records online at federal and state level

Wisconsin – Naturalization & Citizenship – Wisconsin Index to Naturalization Petitions, 1848-1990, index links to images, at FS

Wisconsin – Naturalization & Citizenship – Wisconsin, Milwaukee Naturalization Index, 1848-1990, index & images, at FS

Wisconsin – Naturalization & Citizenship – Wisconsin, Milwaukee Petitions for Naturalization, 1848-1991, index & images, at FS

Wisconsin – Naturalization & Citizenship – Wisconsin, Dane County Naturalization Records, 1887-1945, index & images, at FS

Wisconsin – Naturalization & Citizenship – Wisconsin, County Naturalization Records, 1807-1992, at FS

Wisconsin – Naturalization & Citizenship – Wisconsin, Dane County Naturalization Records, 1887-1945, at FS

Wisconsin – Naturalization & Citizenship – Index to citizenship, at FS

Wisconsin – Naturalization & Citizenship – Naturalization records, 1840-1900, at FS

Wisconsin – Naturalization & Citizenship – Wisconsin naturalization records, 1876-1928, at FS

Wisconsin – Naturalization & Citizenship – Wisconsin, county naturalization records, 1807-1992, at FS

Wisconsin – Naturalization & Citizenship – Illinois, Northern District naturalization index, 1840-1950, at FS

Wisconsin – Naturalization & Citizenship – Index to naturalization petitions, 1848-1990, (Wisconsin), at FS

Wisconsin – Naturalization & Citizenship – Soundex index to naturalization petitions for U.S. District & Circuit Courts, Northern District of Illinois and Immigration and Naturalization Service District 9, 1840-1950, at FS

Wisconsin Naturalization Records online at county level

Adams County – Naturalization and Citizenship – Adams County (Wisconsin) Naturalization Records, 1853-1949, at FS

Adams County – Naturalization and Citizenship – Naturalization Petitions, SAM

Ashland County – Naturalization and Citizenship – Naturalization Records, 1879-1992 [Ashland County, Wisconsin], at FS

Ashland County – Naturalization and Citizenship – Naturalization Petitions, SAM

Barron County – Naturalization and Citizenship – Barron County, Wisconsin Naturalization Records, 1874-1906 [Barron County, Wisconsin], at FS

Barron County – Naturalization and Citizenship – Barron County, Wisconsin Naturalization Records, 1880-1954, Indexes, 1874-1954, at FS

Barron County – Naturalization Records – County Court Records Index, UWS

Bayfield County – Naturalization and Citizenship – Naturalization Records, 1884-1945 [Bayfield County, Wisconsin], at FS

Brown County – Naturalization and Citizenship – Wisconsin, Brown County, [Indexes to Naturalizations, 1829-1991 ; Declarations of Intention, 1848-1950 ; Petitions for Naturalization, 1829-1948 ; Citizenship Order Books, 1929-1955], at FS

Brown County – Naturalization and Citizenship – Wisconsin, Brown County, Court Minutes, 1842-1889, at FS

Brown County – Citizenship – Citizenship Records Index, at UWGB

Buffalo County – Naturalization and Citizenship – Buffalo County, Wisconsin Naturalization Records, 1858-1860, 1906-1950, at FS

Buffalo County – Naturalization and Citizenship – Naturalization Records (ca. 1853-1906) and Naturalization Card Index (ca. 1858-1950), Ca. 1853-1950, at FS

Burnett County – Naturalization and Citizenship – Naturalization Records, 1870-1950, at FS

Burnett County – Naturalization and Citizenship – Naturalization Records, 1888-1958, Burnett County, Wisconsin, at FS

Calumet County – Naturalization and Citizenship – Calumet County (Wisconsin) Naturalization Certificates, 1907-1927, at FS

Calumet County – Naturalization and Citizenship – Calumet County (Wisconsin) Naturalization Records, 1850-1954, at FS

Calumet County – Citizenship – Citizenship Records Index, at UWGB

Chippewa County – Naturalization and Citizenship – Chippewa County (Wisconsin) Naturalization Records, 1850-1951, at FS

Chippewa County – Naturalization and Citizenship – Naturalization Records, 1856-1906, at FS

Chippewa County – Naturalization and Citizenship – Naturalization Records, 1871-1954 and 1871-1947 Index [Rusk County, Wisconsin], at FS

Clark County – Naturalization and Citizenship – Declarations of Intention, 1892-1906 and Petitions, 1905-1906, Clark County, Wisconsin, at FS

Clark County – Naturalization and Citizenship – Naturalization Records, 1857-1954, at FS

Columbia County – Naturalization and Citizenship – Columbia County (Wis.) Naturalization Records, 1845-1955, at FS

Crawford County – Naturalization and Citizenship – Naturalization Records 1909-1950 Crawford County, Wisconsin, at FS

Crawford County – Naturalization and Citizenship – Naturalization Records, 1838-1947, at FS

Dane County – Naturalization and Citizenship – Admission to Citizenship Records, 1855-1906, at FS

Dane County – Naturalization and Citizenship – Dane County (Wis.) Declarations of Intention (1875-1906) and Applications for Admission (1906) –, 1875-1906, at FS

Dane County – Naturalization and Citizenship – Dane County (Wis.) Declarations of Intention, 1841-1847, at FS

Dane County – Naturalization and Citizenship – Dane County (Wis.) Declarations of Intention, 1848-1906, at FS

Dane County – Naturalization and Citizenship – Dane County (Wis.) Declarations of Intention, 1861-1906, at FS

Dane County – Naturalization and Citizenship – Dane County (Wis.) Naturalization Records, 1906, at FS

Dane County – Naturalization and Citizenship – Dane County (Wis.) Petitions and Oaths, 1841-1905, at FS

Dane County – Naturalization and Citizenship – Naturalization Card Index for Dane County, Wisconsin, at FS

Dane County – Naturalization and Citizenship – Wisconsin, Dane County Naturalization Records : COLLECTION RECORD, 1887-1945, at FS

Dane County – Naturalization and Citizenship – Wisconsin, Dane County Naturalization Records, 1887-1945, at FS

Dane County – Naturalization and Citizenship – Declarations of Intent, SAM

Dodge County – Naturalization and Citizenship – Naturalization and Citizenship Records 1931-1954, Dodge County, Wisconsin, at FS

Dodge County – Naturalization and Citizenship – Naturalization Records 1841-1952 (Dodge County, Wisconsin), at FS

Dodge County – Naturalization and Citizenship – Naturalization Records1844-1954, at UWO

Door County – Naturalization and Citizenship – Door County, Wisconsin, Naturalization Records, 1861-1950, at FS

Door County – Citizenship – Citizenship Records Index, at UWGB

Douglas County – Naturalization and Citizenship – Naturalization Records, 1852-1991 [Douglas County, Wisconsin], at FS

Dunn County – Naturalization and Citizenship – Naturalization Records, 1852-1954; Naturalization Index (ca. 1859-1954), at FS

Dunn County – Naturalization Records – County Court Records Index, UWS

Eau Claire County – Naturalization and Citizenship – Naturalization Papers, 1854-1906 [Eau Claire County, Wisconsin], at FS

Eau Claire County – Naturalization and Citizenship – Naturalizations, 1857-1991, at FS

Florence County – Naturalization and Citizenship – Naturalizations, Declarations & Petitions, 1882-1947, Indexes, Ca. 1882-1945 [Florence County, Wisconsin], at FS

Florence County – Citizenship – Citizenship Records Index, at UWGB

Fond du Lac County – Naturalization and Citizenship – Naturalization Records 1844-1974, at UWO

Fond Du Lac County – Naturalization and Citizenship – Naturalization Records and Indexes, Ca. 1844-1972, at FS

Fond Du Lac County – Naturalization and Citizenship – Naturalization Records, Fond Du Lac County, Wisconsin, 1871-1974, at FS

Forest County – Naturalization and Citizenship – Naturalization Records, 1886-1955 [Forest County, Wisconsin], at FS

Grant County – Naturalization and Citizenship – Card Index to Petitions and Repatriations (Grant County, Wisconsin), 1836-1962, at FS

Grant County – Naturalization and Citizenship – Declaration of Intention for Isaac Dodgson, at FS

Grant County – Naturalization and Citizenship – Grant County (Wis.) Naturalization Records, 1836-1962, at FS

Grant County – Naturalization and Citizenship – Index to Petitions and Repatriations 1838-1962, and Naturalization Records 1907-1962, Grant County, Wisconsin, at FS

Green County – Naturalization and Citizenship – Naturalization Records, 1837-1954, at FS

Green Lake County – Naturalization and Citizenship – Naturalization Records 1858-1949, at UWO

Green Lake County – Naturalization and Citizenship – Naturalization Records, 1858-1949 [Green Lake County, Wisconsin], at FS

Green Lake County – Naturalization and Citizenship – Naturalization Records, 1894-1947, Green Lake County, Wisconsin, at FS

Iowa County – Naturalization and Citizenship – Iowa County (Wis.) Naturalization Records, 1835-1906, at FS

Iowa County – Naturalization and Citizenship – Naturalization Records, 1837-1953, at FS

Iron County – Naturalization and Citizenship – Iron County (Wis.) Naturalization Records, 1893-1954, at FS

Jackson County – Naturalization and Citizenship – Naturalization Records, 1853-1963, at FS

Jackson County – Naturalization and Citizenship – Naturalization Petitions, SAM

Jefferson County – Naturalization and Citizenship – Naturalization Records (1842-1945) and Index to Naturalizations (1849-1950) –, 1842-1950, at FS

Jefferson County – Naturalization and Citizenship – Naturalization Records, 1877-1949, Jefferson County, Wisconsin, at FS

Juneau County – Naturalization and Citizenship – Juneau County (Wis.) Naturalization Records (1852-1929) and Indexes (1849-1957) –, 1849-1957, at FS

Juneau County – Naturalization and Citizenship – Juneau County Genealogy Records, WGW

Kenosha County – Naturalization and Citizenship – Addendum to Index to Naturalization 1920-1983, and Naturalization Records 1906-1982, Kenosha County, Wisconsin, at FS

Kenosha County – Naturalization and Citizenship – Naturalization Records, 1884-1931 ; Index to Naturalization, 1852-1964, at FS

Kewaunee County – Naturalization and Citizenship – Kewaunee County, Wisconsin, Naturalization Records, 1850-1948, at FS

Kewaunee County – Citizenship – Citizenship Records Index, at UWGB

La Crosse County – Naturalization and Citizenship – La Crosse County, Wisconsin, Naturalization Records, 1906-1990, at FS

La Crosse County – Naturalization and Citizenship – La Crosse County, Wisconsin, Index to Naturalizations, 1860-1990, at FS

La Crosse County – Naturalization and Citizenship – Naturalization and Citizenship Records, 1850-1950, at FS

La Crosse County – Naturalization and Citizenship – Wisconsin, La Crosse, Declarations of Intention Records, 1872-1924, at FS

Lafayette County – Naturalization and Citizenship – Card Index to Petitions (Lafayette County, Wisconsin), 1847-1954, at FS

Lafayette County – Naturalization and Citizenship – Lafayette County (Wis.) Naturalization Records, 1847-1954, at FS

Lafayette County – Naturalization and Citizenship – Lafayette County (Wisconsin) Citizenship Index, Register, Certificiates, Orders and Decrees, 1847-1935, at FS

Langlade County – Naturalization and Citizenship – Langlade County (Wisconsin) Naturalization Records, 1881-1954 [Langlade County, Wisconsin], at FS

Lincoln County – Naturalization and Citizenship – Lincoln County (Wis.) Naturalization Records (1872-1948) and Indexes (1976-1958) –, 1872-1958, at FS

Manitowoc County – Naturalization and Citizenship – Wisconsin, Manitowoc County, Naturalization Records, 1848-1955; Indexes, 1855-1954, at FS

Manitowoc County – Citizenship – Citizenship Records Index, at UWGB

Marathon County – Naturalization and Citizenship – Naturalizations, 1850-1991 [Marathon County, Wisconsin], at FS

Marinette County – Naturalization and Citizenship – Marinette County (Wis.) Naturalization Records (1879-1980) and Indexes (1879-1982), at FS

Marinette County – Citizenship – Citizenship Records Index, at UWGB

Marquette County – Naturalization and Citizenship – Naturalization Records 1848-1949, at UWO

Marquette County – Naturalization and Citizenship – Naturalization Records, 1848-1949 [Marquette County, Wisconsin], at FS

Milwaukee County – Naturalization and Citizenship – Wisconsin, Milwaukee Petitions for Naturalization : COLLECTION RECORD, 1848-1991, at FS

Milwaukee County – Naturalization and Citizenship – Wisconsin, Milwaukee, Petitions to Naturalization, 1848-1991, at FS

Monroe County – Naturalization and Citizenship – Monroe County (Wis.) Naturalization Records, 1846-1946, at FS

Oconto County – Naturalization and Citizenship – Oconto County (Wis.) Naturalization Records and Indexes, 1857-1952, at FS

Oconto County – Citizenship – Citizenship Records Index, at UWGB

Oneida County – Naturalization and Citizenship – Naturalization Records 1906-1951, and Indexes 1891-1954, Oneida County, Wisconsin, at FS

Oneida County – Naturalization and Citizenship – Naturalization Records, 1887-1906, at FS

Outagamie County – Naturalization and Citizenship – Outagamie County, Wisconsin, Index to Certificates and Petitions, 1853-1963 and Declarations of Intention 1852-1963, at FS

Outagamie County – Citizenship – Citizenship Records Index, at UWGB

Ozaukee County – Naturalization and Citizenship – Letzebuerger Sprooch : Luxembourg Society of Wisconsin Newsletter, at FS

Ozaukee County – Naturalization and Citizenship – Naturalization Records, Ca. 1853-1920, at FS

Ozaukee County – Colonization – Letzebuerger Sprooch : Luxembourg Society of Wisconsin Newsletter, at FS

Pepin County – Naturalization and Citizenship – Naturalization Records 1859-1944; Index to Citizenship Ca. 1880-1915, at FS

Pepin County – Naturalization and Citizenship – Pepin County Genealogy Records, WGWA

Pepin County – Naturalization Records – County Court Records Index, UWS

Pierce County – Naturalization and Citizenship – Naturalization Records, 1854-1963, at FS

Polk County – Naturalization and Citizenship – Naturalization Card Index for Polk County, Wisconsin, at FS

Polk County – Naturalization and Citizenship – Naturalization Records 1859-1954, Polk County, Wisconsin, at FS

Polk County – Naturalization and Citizenship – Naturalization Records, 1859-1906, at FS

Portage County – Naturalization and Citizenship – Naturalization Index for Portage County, Wisconsin, at FS

Portage County – Central Wisconsin Genealogy Index (obit, census, naturalization), at UWSP

Portage County – Naturalization and Citizenship – Naturalization Records, 1844-1956, at FS

Price County – Naturalization and Citizenship – Naturalization Records, 1882-1954 [Price County, Wisconsin], at FS

Racine County – Naturalization and Citizenship – Declarations of Intention Index 1880-1905 and Naturalization Records 1904-1958, Racine County,Wisconsin, at FS

Racine County – Naturalization and Citizenship – Naturalization Records, 1837-1906; Card Index to Naturalizations, 1838-1945, at FS

Richland County – Naturalization and Citizenship – Card Index to Petitions and Certificates (Richland County, Wisconsin), 1861-1946, at FS

Richland County – Naturalization and Citizenship – Naturalizations, 1860-1946, at FS

Rock County – Naturalization and Citizenship – Naturalization Records, 1839-1982 [Rock County, Wisconsin], at FS

Rock County – Naturalization and Citizenship – Rock County (Wis.) Naturalization Records, 1839-1959, at FS

Rusk County – Naturalization and Citizenship – Naturalization Records, 1871-1954 and 1871-1947 Index [Rusk County, Wisconsin], at FS

Sauk County – Naturalization and Citizenship – Index to Citizenship, at FS

Sauk County – Naturalization and Citizenship – Naturalization Records, 1844-1955, at FS

Sawyer County – Naturalization and Citizenship – Naturalization and Citizenship Records 1906-1954, Sawyer County, Wisconsin, at FS

Sawyer County – Naturalization and Citizenship – Naturalization Records, 1885-1954, at FS

Shawano County – Naturalization and Citizenship – Shawano County (Wis.) Extract of Naturalization Records, 1859-1929, at FS

Shawano County – Naturalization and Citizenship – Shawano County (Wis.) Naturalization Records, 1861-1949, at FS

Shawano County – Citizenship – Citizenship Records Index, at UWGB

Sheboygan County – Naturalization and Citizenship – Naturalization Records, Ca. 1851-1982, at FS

St. Croix County – Naturalization and Citizenship – Naturalization Records 1849-1952, St. Croix County, Wisconsin, at FS

St. Croix County – Naturalization and Citizenship – Naturalization Records, 1850-1906, at FS

St. Croix County – Naturalization and Citizenship – Naturalization Card Index for St. Croix County, Wisconsin, at FS

Taylor County – Naturalization and Citizenship – Certificates of Citizenship, 1903-1906 ; Petition for Citizenship, 1903- 1906 ; Index to Citizenship, 1860-1953 [Taylor County, Wisconsin], at FS

Taylor County – Naturalization and Citizenship – Certificates of Naturalization, 1877-1906 ; Index to Certificates of Naturalization, 1879-1902, 1877-1906, at FS

Taylor County – Naturalization and Citizenship – Declarations of Intention and Index, 1875-1906, at FS

Taylor County – Naturalization and Citizenship – Taylor County ( Wisconsin) Naturalization Records, 1906-1955, at FS

Trempealeau County – Naturalization and Citizenship – Naturalization Records (1852-1953) and Indexes (1852-1926) Trempealeau County, Wisconsin, at FS

Vernon County – Naturalization and Citizenship – Naturalization Records, 1853-1947, at FS

Vilas County – Naturalization and Citizenship – Naturalization Records, 1893-1948 [Vilas County, Wisconsin], at FS

Walworth County – Naturalization and Citizenship – Declarations of Intention 1937-1954, Petitions 1906-1948, Orders Granting and Denying Citizenship 1830-1955, Walworth County, Wisconsin, at FS

Walworth County – Naturalization and Citizenship – Naturalization Records, 1840-1943 ; Index to Citizenship, 1906-1955, Walworth County, Wisconsin, at FS

Washburn County – Naturalization and Citizenship – Naturalization Records, 1878-1911 [Washburn County, Wisconsin], at FS

Washburn County – Naturalization and Citizenship – Washburn County (Wis.) Naturalization Records, 1880-1954, at FS

Washington County – Naturalization and Citizenship – Index to Naturalizations, Washington County, Wisconsin, 1845-1980, at FS

Washington County – Naturalization and Citizenship – Naturalization Records 1904-1959, Walworth County, Wisconsin, at FS

Washington County – Naturalization and Citizenship – Petitions for Naturalization and Declarations of Intention, 1845-1906, at FS

Waukesha County – Naturalization and Citizenship – Waukesha County (Wis.) Naturalization Records, 1847-1955, at FS

Waupaca County – Naturalization and Citizenship – Wisconsin, Waupaca County, Naturalization Records, 1853-1948, at FS

Waupaca County – Central Wisconsin Genealogy Index (obit, census, naturalization), at UWSP

Waupaca County – Naturalization and Citizenship – Declarations of Intent, SAM

Waushara County – Naturalization and Citizenship – Waushara County (Wis.) Naturalization Records, 1852-1949, at FS

Waushara County – Naturalization and Citizenship – Waushara County Genealogy Records, at WGW

Winnebago County – Naturalization and Citizenship – Oshkosh Naturalization Records Index, at OPL

Winnebago County – Naturalization and Citizenship – Declarations of Intent, SAM

Winnebago County – Naturalization and Citizenship – Naturalization Records 1844-1963 at UWO

Winnebago County – Naturalization and Citizenship – Naturalization Records, 1848-1961, at FS

Winnebago County – Naturalization and Citizenship – Winnebago County (Wisconsin) Naturalization Records, 1934-1949, at FS

Wood County – Naturalization and Citizenship – Wood County (Wisconsin) Naturalization Records (1853-1981) and Indexes (1906-1991), 1853-1991, at FS

Wisconsin Naturalization Records online at city level

Milwaukee – Naturalization and Citizenship – Index to Naturalization Petitions, 1848-1990, (Wisconsin), at FS

Milwaukee – Naturalization and Citizenship – Wisconsin, Milwaukee Naturalization Index : COLLECTION RECORD, 1848-1990, at FS

Milwaukee – Naturalization and Citizenship – Wisconsin, Milwaukee Naturalization Index and Repatriations Books, 1848-1990, at FS