Delaware Naturalization and Citizenship

Online Resources

 * 1795-1928 U.S. Naturalization Records Indexes for Delaware, 1795-1928 at Ancestry ($); index and images
 * 1795-1930 U.S., Naturalization Records - Original Documents, (World Archives Project) for Delaware, 1795-1930 at Ancestry ($); index and images
 * 1796-1958 at FamilySearch; images — How to Use this Collection
 * 1796-1959 Delaware Naturalization Records, 1796-1959 at Ancestry ($); index and images
 * 1802-1943 Delaware, Federal Naturalization Records, 1802-1943 at Ancestry ($); index and images
 * 1944-2003 U.S., Index to Alien Case Files, 1944-2003 at Ancestry — index ($)

Availability
Naturalization papers in Delaware were generally filed in the superior courts. The Delaware Public Archives has naturalization records for:


 * Kent County 1798-1929
 * New Castle County 1811-1906
 * Sussex County 1795-1852

The Historical Society of Delaware has five volumes of New Castle County naturalization records for the years 1829 to 1856.

The FamilySearch Library has these sources:


 * Delaware. Superior Court. Naturalization Papers, Transcripts and Originals, A-Z. Salt Lake City, Utah: Genealogical Society of Utah, 1949. . These are naturalization records from the three counties, 1834 to 1870. New Castle County naturalizations before 1811 were recorded in the deed books. New Castle declarations from 1826 to 1850 are at the Delaware Public Archives and the Historical Society of Delaware.
 * United States. District Court (Delaware). Naturalization Records, 1795-1932. Salt Lake City, Utah: Genealogical Society of Utah, 1990. (On 27 FamilySearch Library . These District and Circuit Court records include declarations 1842-1936, petition indexes 1795-1927, and petitions 1817-1929.
 * Filby, P. William. Philadelphia Naturalization Records. Detroit, Michigan: Gale Research, 1982. . Many Delaware residents filed naturalization applications in the local courts in Philadelphia.

National Archives--Mid-Atlantic Region
For additional naturalization records, especially after 1906, contact the National Archives—Mid-Atlantic Region. They have Delaware District Court naturalizations for 1843 to 1959.

Citizenship and Immigration Services
Duplicate court naturalization records may also be found at the Citizenship and Immigration Services or CIS. To access these records you may use their Genealogy Program.