One of the most common questions I am asked as a genealogy librarian is —Where were my immigrant ancestors from?
To answer this question, it is helpful to narrow down your ancestor’s immigration and naturalization dates.
U.S. Federal Census Records
The 1890 through 1930 U.S. federal census records include important immigration data. The following questions were asked.
1890 Census
All but 1% of the 1890 census was burned in a fire. If you are lucky and your ancestor’s record survived, you may find the following information.
- Number of years in the United States
- Whether naturalized
- Whether naturalization papers have been taken out
1900 Census
- Year of immigration to the United States
- Number of years in the United States
- Naturalization
1910 Census
- Year of immigration to the United States
- Whether naturalized or alien
1920 Census
- Year of immigration to the United States
- Whether naturalized or alien
- If naturalized, year of naturalization
1930 Census
- Year of immigration to the United States
- Naturalization
To understand the data which was to be recorded, see the census instructions. Don’t take the dates recorded as written in stone. Memories can fade and the person providing the information to the census taker may not be the immigrant.
For information on accessing the U.S. Federal Census, see the FamilySearch Wiki.
State Census Records
Some states took their own censuses in addition to the federal censuses. New York State took censuses in 1825, 1835, 1845, 1855, 1865, 1875, 1892, 1905, 1915, and 1925. New York State census records are readily accessible online.
1892 New York State Census
1905 & 1915 New York State Censuses
- Number of years in the United States
- Citizen or alien
1925 New York State Census
- Number of years in the United States
- Citizen or alien
- If naturalized, when and where
The First Piece of U.S. Evidence
If your ancestors died before the relevant censuses (above), a good strategy is to gather all of the documents that you’ve collected about your ancestor and their close family. The date of the earliest document created in the United States can serve as an “arrived by” date, which will narrow down your search for immigration records.