Iowa Naturalization records online and Iowa Citizenship Records online may include declarations of intent, petitions for naturalization, oaths of allegiance, certificates of citizenship, 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) and state census (1825-1925) records to see if your ancestor was naturalized. See Iowa Census Records online for census record links and other helpful sources. Also see Iowa Emigration and Immigration Records online.

 

 

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Iowa Naturalization Records online at the federal and state level

US – Naturalization and Citizenship – United States, Iowa Naturalization Records, 1859-1990, index links to images

Iowa – Naturalization and Citizenship – Bankruptcy docket, 1859-1869, at FS

Iowa – Naturalization and Citizenship – Declarations of intention and miscellaneous papers, 1849-1888, at FS

Iowa – Naturalization and Citizenship – Declarations of intention, 1886-1936; naturalizations, 1891-1936, at FS

Iowa – Naturalization and Citizenship – Declarations of intention, 1914-1936; petitions, 1915-1936, at FS

Iowa – Naturalization and Citizenship – General index to declaration of intention and petitions, 1909-1948; declaration of intention, 1917-1936; petitions, 1909-1936, at FS

Iowa – Naturalization and Citizenship – Lists of persons naturalized, 1853-1874, at FS

Iowa – Naturalization and Citizenship – Naturalization records, 1915-1936; some 1951 letters of amendment for earlier petitions, at FS

Iowa – Naturalization and Citizenship – Naturalization related records, 1930-1936, at FS

Iowa – Naturalization and Citizenship – Naturalization records, 1910-1936, at FS

Iowa – Naturalization and Citizenship – Petitions granted & continued, 1930-1935; Naturalizations, 1919-1926, at FS

Iowa – Naturalization and Citizenship – Illinois, Northern District naturalization index, 1840-1950, at FS

Iowa – Naturalization and 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

 

 

 

Iowa Naturalization Records online at the county level

Adair County – Naturalization and Citizenship – Naturalization Records, 1858-1904; Index, 1858-1899, at FS

Adams County – Naturalization and Citizenship – Naturalization Index, 1880-1915, at FS

Adams County – Naturalization and Citizenship – Naturalization Records, 1871-1924, at FS

Allamakee County – Naturalization and Citizenship – Naturalization Record, 1845-1929; Index, Ca. 1848-1929, at FS

Appanoose County – Naturalization and Citizenship – Naturalization Records, 1866-1929, at FS

Audubon County – Naturalization and Citizenship – Declarations of Intention, 1906-1929, at FS

Audubon County – Naturalization and Citizenship – Naturalization Records, 1876-1906, at FS

Audubon County – Naturalization and Citizenship – Petitions and Records, 1906-1929, at FS

Benton County – Naturalization and Citizenship – Iowa, Benton County, Naturalization Records, 1891-1902, at FS

Benton County – Naturalization and Citizenship – Naturalization Records, 1860-1929, at FS

Black Hawk County – Naturalization and Citizenship – Black Hawk County, Iowa, Naturalization Index Card File, at FS

Black Hawk County – Naturalization and Citizenship – Iowa, Black Hawk County, Naturalization Records, 1944-1962, at FS

Black Hawk County – Naturalization and Citizenship – Naturalization Records, 1855-1936, at FS

Boone County – Naturalization and Citizenship – Boone County, Iowa Naturalization Record Index : 1870-1912, at FS

Boone County – Naturalization and Citizenship – Naturalization Records, 1867-1910, at FS

Bremer County – Naturalization and Citizenship – Court Records, 1854-1862, at FS

Bremer County – Naturalization and Citizenship – Naturalization Records, 1873-1947, at FS

Buchanan County – Naturalization and Citizenship – Naturalization Records, 1852-1930, at FS

Butler County – Naturalization and Citizenship – Butler County, Iowa Naturalization Index : 1860-1940, at FS

Butler County – Naturalization and Citizenship – Naturalization Records, 1872-1929, at FS

Calhoun County – Naturalization and Citizenship – Naturalization Index, 1873-1906 ; Naturalization Records, 1873-1906, at FS

Calhoun County – Naturalization and Citizenship – Naturalization Records, 1907-1929, at FS

Carroll County – Naturalization and Citizenship – Naturalization Records, 1873-1944; Index, 1860-1970, at FS

Cass County – Naturalization and Citizenship – Naturalization Index, 1877-1929, at FS

Cass County – Naturalization and Citizenship – Naturalization Records, 1870-1928, at FS

Cedar County – Naturalization and Citizenship – Naturalization Records, 1860-1929; Index, 1855-1930, at FS

Cerro Gordo County – Naturalization and Citizenship – Iowa, Cerro Gordo County, Naturalization Records, 1943-1961, at FS

Cerro Gordo County – Naturalization and Citizenship – Naturalization Records, 1856-1934; Indexes, 1850-1945, at FS

Cherokee County – Naturalization and Citizenship – Naturalization Records, 1871-1936, at FS

Chickasaw County – Naturalization and Citizenship – Naturalization Records, 1858-1906, at FS

Clarke County – Naturalization and Citizenship – Naturalization Records, 1870-1925, at FS

Clarke County – Naturalization and Citizenship – Naturalization Related Records, 1930-1936, at FS

Clay County – Naturalization and Citizenship – Naturalization Calendar, 1884 – 1906, at FS

Clay County – Naturalization and Citizenship – Naturalization Record, 1866-1932; Index, 1866-1906, at FS

Clayton County – Naturalization and Citizenship – Naturalization Records, 1858-1929, at FS

Clinton County – Naturalization and Citizenship – Clinton County, Iowa, County Court Docket, 1861-1870, at FS

Clinton County – Naturalization and Citizenship – Naturalization Records, 1855-1955; Index 1859-1877, at FS

Clinton County – Naturalization and Citizenship – Naturalizations, 1870-1886, at FS

Crawford County – Naturalization and Citizenship – Naturalization Records, 1874-1944, at FS

Dallas County – Naturalization and Citizenship – Naturalization Records, 1873-1915; Index, 1873-1906, at FS

Davis County – Naturalization and Citizenship – Naturalization Records, 1879-1929, at FS

Decatur County – Naturalization and Citizenship – Naturalization Records, 1876-1928, at FS

Decatur County – Naturalization and Citizenship – Naturalization Related Records, 1930-1936, at FS

Des Moines County – Naturalization and Citizenship – County Court Records, V. A, 1849-1857, at FS

Des Moines County – Naturalization and Citizenship – Court Records, 1869-1886; Indexes 1836-1928, at FS

Des Moines County – Naturalization and Citizenship – Des Moines County, Iowa Naturalization Card Index, Ca. 1847-1930, at FS

Des Moines County – Naturalization and Citizenship – District Court Records, 1835-1937; Indexes, 1883-1932, at FS

Des Moines County – Naturalization and Citizenship – Naturalization Index, 1849-1857 : Des Moines County, Iowa, at FS

Des Moines County – Naturalization and Citizenship – Naturalization Records, 1855-1930; Index, 1855-1880, at FS

Des Moines County – Naturalization and Citizenship – Naturalization Records, 1866-1868, at FS

Dickinson County – Naturalization and Citizenship – Naturalization Records, 1872 – 1935, at FS

Dubuque County – Naturalization and Citizenship – Iowa, Dubuque County, Naturalization Records, 1914-1965, at FS

Dubuque County – Naturalization and Citizenship – Naturalization Index, 1840-1947, at FS

Dubuque County – Naturalization and Citizenship – Naturalization Records, 1836-1933, at FS

Emmet County – Naturalization and Citizenship – Naturalization Record, 1870-1930, at FS

Fayette County – Naturalization and Citizenship – Marriage Records, 1851-1928; Index to Marriages, Births and Deaths, 1880 -1900, at FS

Fayette County – Naturalization and Citizenship – Naturalization Records, 1859-1929, at FS

Fayette County – Naturalization and Citizenship – Naturalization Records, 1903-1912, at FS

Floyd County – Naturalization and Citizenship – Naturalization Records, 1855-1929, at FS

Franklin County – Naturalization and Citizenship – Naturalization Records, 1855-1918, at FS

Fremont County – Naturalization and Citizenship – Naturalization Records, 1863-1930, at FS

Greene County – Naturalization and Citizenship – Naturalization Records, 1879-1945, at FS

Grundy County – Naturalization and Citizenship – Naturalization Records, 1870-1929, at FS

Guthrie County – Naturalization and Citizenship – Naturalization Card File Index, 1906-1920, at FS

Hamilton County – Naturalization and Citizenship – Naturalization Records, 1871-1930 ; Index to Naturalization Records, Ca. 1868-1928, at FS

Hancock County – Naturalization and Citizenship – Naturalization Index, 1875-1944, at FS

Hardin County – Naturalization and Citizenship – Declarations of Intention, 1872-1906, at FS

Hardin County – Naturalization and Citizenship – Naturalization Records, 1859-1914, at FS

Harrison County – Naturalization and Citizenship – Naturalization Records, 1869-1930, at FS

Henry County – Naturalization and Citizenship – Naturalization Records and Declarations of Intention, 1839-1952; Index, 1841-1939, at FS

Howard County – Naturalization and Citizenship – Naturalization Records, 1877-1951, at FS

Humboldt County – Naturalization and Citizenship – Declaration of Intentions, 1906-1930, at FS

Humboldt County – Naturalization and Citizenship – Naturalization Record, 1870-1906, at FS

Humboldt County – Naturalization and Citizenship – Naturalization Card Index, 1871-1906, at FS

Humboldt County – Naturalization and Citizenship – Petition and Record, 1907-1929, at FS

Ida County – Naturalization and Citizenship – Naturalization Records, 1875-1942, at FS

Iowa County – Naturalization and Citizenship – Naturalization Records, 1869-1930, at FS

Jackson County – Naturalization and Citizenship – Naturalization Records, 1857-1941, at FS

Jasper County – Naturalization and Citizenship – Iowa, Jasper County Naturalization Records, at FS

Jasper County – Naturalization and Citizenship – Naturalization Records, 1861-1929, at FS

Jefferson County – Naturalization and Citizenship – Card Index to Naturalizations, at FS

Jefferson County – Naturalization and Citizenship – Naturalization Records, 1871-1905, at FS

Johnson County – Naturalization and Citizenship – Court Records, 1839-1943; Indexes 1842-1934, at FS

Johnson County – Naturalization and Citizenship – Naturalization Records, 1855-1954, at FS

Jones County – Naturalization and Citizenship – Naturalization Records, 1858-1941; Index, 1860-1904, at FS

Keokuk County – Naturalization and Citizenship – Naturalization Records, 1851-1930; Index, 1856-1904, at FS

Kossuth County – Naturalization and Citizenship – Naturalization Records, 1864-1932; Index, Ca. 1870-ca. 1906, at FS

Lee County – Naturalization and Citizenship – Iowa, Lee County, Naturalization Records, 1853-1874, at FS

Lee County – Naturalization and Citizenship – Naturalization and Marriage Record, 1856-1861; Index to Naturalization, 1856-1906, at FS

Lee County – Naturalization and Citizenship – Naturalization Records, 1854-1954; Tax Records, 1848; Index to Naturalization Records, 1852-1905, at FS

Linn County – Naturalization and Citizenship – County Court Records, 1861-1869, at FS

Linn County – Naturalization and Citizenship – Iowa, Linn County, Naturalization Records, 1886-1947, at FS

Linn County – Naturalization and Citizenship – Naturalization Records, 1856-1924, at FS

Louisa County – Naturalization and Citizenship – Naturalization Records, 1856-1944, at FS

Lucas County – Naturalization and Citizenship – Naturalization Records, 1854-1929, at FS

Lucas County – Naturalization and Citizenship – Naturalization Related Records, 1930-1936, at FS

Lyon County – Naturalization and Citizenship – Naturalization Records, 1872 – 1954, at FS

Madison County – Naturalization and Citizenship – Iowa, Madison County, Naturalization Records, 1908-1924, at FS

Madison County – Naturalization and Citizenship – Naturalization Records, 1887-1926, at FS

Mahaska County – Naturalization and Citizenship – District Court Records, 1844-1926, at FS

Mahaska County – Naturalization and Citizenship – Naturalization Records, 1871-1930, at FS

Marion County – Naturalization and Citizenship – Miscellaneous Court Records, 1866-1882, at FS

Marion County – Naturalization and Citizenship – Naturalization Index, 1896-1920, at FS

Marion County – Naturalization and Citizenship – Naturalization Records, 1847-1930; Indexes, 1847-1856, at FS

Marshall County – Naturalization and Citizenship – District Court Record, Vol. A-B, 1854-1862, at FS

Marshall County – Naturalization and Citizenship – Naturalization Index, 1850-1950, at FS

Marshall County – Naturalization and Citizenship – Naturalization Records, 1856-1955, at FS

Mitchell County – Naturalization and Citizenship – Naturalization Records, 1846-1929, at FS

Monona County – Naturalization and Citizenship – Circuit Court Record, 1869-1882; General Index, 1869-ca. 1887, at FS

Monona County – Naturalization and Citizenship – County Court Minute Book, 1861-1878., at FS

Monona County – Naturalization and Citizenship – Naturalization Affidavits, 1903-1906, at FS

Monona County – Naturalization and Citizenship – Naturalization Calendar, 1901-1903, at FS

Monona County – Naturalization and Citizenship – Naturalization Record, 1879-1938; Index, 1879-1938, at FS

Monroe County – Naturalization and Citizenship – Iowa, Monroe County, Naturalization Records, 1852-1929, at FS

Monroe County – Naturalization and Citizenship – Naturalization Records, 1870-1930, at FS

Montgomery County – Naturalization and Citizenship – Naturalization Records, 1869-1929, at FS

Muscatine County – Naturalization and Citizenship – Naturalization Records, 1829-1953, at FS

Muscatine County – Naturalization and Citizenship – Naturalization Records, 1855-1945; Indexes, 1837-1944, at FS

O’Brien County – Naturalization and Citizenship – Naturalization Record Index, 1870-1906, at FS

O’Brien County – Naturalization and Citizenship – Naturalization Records, 1872-1951, at FS

Osceola County – Naturalization and Citizenship – Naturalization Records, 1872-1929, at FS

Page County – Naturalization and Citizenship – Naturalization Records, 1869-1937, at FS

Palo Alto County – Naturalization and Citizenship – Naturalization Records, 1870-1931; Calendar, 1897-1906, at FS

Plymouth County – Naturalization and Citizenship – Naturalization Record Card Index, 1869-1906, at FS

Plymouth County – Naturalization and Citizenship – Naturalization Records, 1872-1944, at FS

Plymouth County – Naturalization and Citizenship – Northwest Iowa Pioneers, at FS

Pocahontas County – Naturalization and Citizenship – Pocahontas County, Iowa Naturalization Records, 1867-1914, at FS

Pocahontas County – Naturalization and Citizenship – Pocahontas County, Iowa Naturalization Records, 1908-1929, at FS

Polk County – Naturalization and Citizenship – Index to Naturalization, 1852-1884, at FS

Polk County – Naturalization and Citizenship – Iowa, Polk County, Naturalization Records, 1915-1985, at FS

Polk County – Naturalization and Citizenship – Naturalization Records, 1907-1927, at FS

Pottawattamie County – Naturalization and Citizenship – Naturalization Records, 1868-1929, at FS

Poweshiek County – Naturalization and Citizenship – Naturalization Records, 1846-1930; Index, 1860-1930, at FS

Ringgold County – Naturalization and Citizenship – Naturalization Records, 1868-1957, at FS

Sac County – Naturalization and Citizenship – Naturalization Card Index, 1875-1943, at FS

Sac County – Naturalization and Citizenship – Naturalization Records, 1875-1943, at FS

Scott County – Naturalization and Citizenship – Naturalization Index of Scott County, Iowa 1842-1930 : 1842-1930, at FS

Scott County – Naturalization and Citizenship – Naturalization Records, 1838-1930; Indexes, 1840-1930, at FS

Scott County – Naturalization and Citizenship – Scott County Iowa Naturalization Book : Up to 1906, then 1907 to 1926, at FS

Shelby County – Naturalization and Citizenship – Naturalization Records, 1871-1930, at FS

Sioux County – Naturalization and Citizenship – Naturalization Records, 1871-1951, at FS

Story County – Naturalization and Citizenship – Index to Naturalization Records, Ca. 1863-1906, at FS

Story County – Naturalization and Citizenship – Naturalization Records, 1865-1917, at FS

Tama County – Naturalization and Citizenship – Naturalization Records, 1845-1930; Indexes, 1859-1930, at FS

Taylor County – Naturalization and Citizenship – Naturalization Records, 1868-1928, at FS

Union County – Naturalization and Citizenship – Iowa, Union County, Naturalization Records, 1930-1951, at FS

Union County – Naturalization and Citizenship – Naturalization Records, 1870-1929; Index, 1873-1935, at FS

Union County – Naturalization and Citizenship – Naturalization Related Records, 1930-1936, at FS

Van Buren County – Naturalization and Citizenship – Naturalization Records, 1838-1901, 1904, at FS

Wapello County – Naturalization and Citizenship – Iowa, Wapello County, Naturalization Records, 1907-1951, at FS

Wapello County – Naturalization and Citizenship – Naturalization Record, 1879-1883; Default Record, 1879-1897, at FS

Wapello County – Naturalization and Citizenship – Naturalization Records, 1871-1906, 1915, at FS

Warren County – Naturalization and Citizenship – Naturalization Records, 1865-1925, at FS

Washington County – Naturalization and Citizenship – Court Records, 1838-1927, at FS

Washington County – Naturalization and Citizenship – Naturalization Papers, 1854-1929, at FS

Webster County – Naturalization and Citizenship – Iowa, Webster County, Naturalization Records, 1909-1927, at FS

Webster County – Naturalization and Citizenship – Naturalization Records, 1863-1929, at FS

Winnebago County – Naturalization and Citizenship – Naturalization Index, 1865-1930 ; Naturalization Records, 1872-1939, at FS

Winneshiek County – Naturalization and Citizenship – Court Records, “Record of Everything” and Vol. B, 1851-1868, at FS

Winneshiek County – Naturalization and Citizenship – Naturalization Records, 1855-1929; Index, 1854-1906, at FS

Winneshiek County – Naturalization and Citizenship – Winneshiek County Clerk of Court Collection Index : an Alphabetical List of Selected Names, Pt. 1, at FS

Woodbury County – Naturalization and Citizenship – Iowa, Woodbury County, Naturalization Records, 1932-1990, at FS

Woodbury County – Naturalization and Citizenship – Naturalization Records, 1855 – 1943, at FS

Worth County – Naturalization and Citizenship – Naturalization Records, 1858-1930, at FS

Wright County – Naturalization and Citizenship – Naturalization Records, 1857-1929, at FS

 

 

 

Iowa Naturalization Records online at the city level

Buena Vista County – Naturalization and Citizenship – Naturalization Records, 1877-1929, at FS

Council Bluffs – Naturalization and Citizenship – Naturalization Records, 1892-1906, at FS

Des Moines – Naturalization and Citizenship – Naturalization Records, 1915-1936; Some 1951 Letters of Ammendment for Earlier Petitions, at FS

Oelwein – Naturalization and Citizenship – Naturalization Records, 1903-1912, at FS

Ottumwa – Naturalization and Citizenship – Naturalization Records, 1915-1936; Some 1951 Letters of Ammendment for Earlier Petitions, at FS

Ottumwa – Naturalization and Citizenship – Petitions Granted & Continued, 1930-1935; Naturalizations, 1919-1926, at FS

 

 

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