Colorado, United States Naturalization Records - FamilySearch Historical Records

What is in This Collection?
This collection includes records such as Petitions for Naturalization, Declarations of Intention, and Oaths of Allegiance filed in the United States District Court of Colorado in Pueblo and Denver from 1877 to 1952. Original images are housed at the National Archives and Records Administration Denver Branch. This collection is associated with NARA Record Group 21 and Microfilm Publication M1192.


 * National Archives Related Collections
 * U.S. District Court for the Pueblo Division of the District of Colorado.
 * Naturalization Certificate Stubs, 1907–1926
 * Mixed Naturalization and Other Records, 1884–1919
 * Orders and Petitions Concerning Naturalization, 1926–1949
 * Lists of Naturalization Petitions Recommended, Continued, or Denied, 1926–1949
 * Naturalization Case Files, 1883–1922
 * Petition and Naturalization Record Books, 1912–1949


 * U.S. District Court for the Northern (Denver) Division of the District of Colorado
 * Naturalization Certificate Stubs, 1907–1919
 * Soldiers' Naturalization Certificate Stubs, 1919–1920
 * Declarations of Intention for Citizenship, 1877–1966
 * Naturalization Dockets, 1906–1916
 * Naturalization Case Files, 1876–1947
 * Petitions for Naturalization, 1906–1990
 * Soldiers' Petition and Naturalization Record Books, 1918–1928
 * Petitions for Naturalization by Members of Armed Forces, 1943–1956

The naturalization volumes vary in size and format. Prior to the late 1800s each document was usually handwritten on one page. From the late 1800s and on, printed forms were used. After 1906, many entries were typewritten. While there were various types of naturalization records, the Declaration of Intent and Naturalization Petition usually had the most complete genealogical information. The first naturalization act was passed in 1802. Immigrants to the United States were not required to apply for citizenship. Of those who did apply, many did not complete the requirements for citizenship. Naturalization to become a U.S. citizen was a two-part process: the Declaration of Intent to Naturalize, or First Papers, and the Naturalization Record (including the Naturalization Petition), or Final Papers. The First Papers were normally filed five years before the Final Papers because of the five-year residency requirement to become a citizen.

No centralized files existed before 1906. In 1906 federal forms replaced the various formats that had been used by the various courts. Copies were sent to the Immigration and Naturalization Service (INS), creating a central file for naturalization papers. The INS is now known as the U.S. Citizenship and Immigration Services (USCIS). Naturalization records are generally well preserved, but some records may have been lost to fire or other disasters. Naturalization is the process of granting citizenship privileges and responsibilities to foreign-born residents. Counties recorded naturalization procedures in the court records as legal proof of citizenship.

What Can These Records Tell Me?
The following information may be found in these records: Petition • 2 Declarations of Intent and Naturalization Petitions • 2

How Do I Search This Collection?
Before searching this collection, it is helpful to know:
 * Name of the person
 * Approximate date of the event

How Do I Analyze the Results?
Compare each result from your search with what you know to determine if there is a match. This may require viewing multiple records or images. Keep track of your research in a research log.

I Found the Person I Was Looking For, What Now?

 * Add any new information to your records
 * If available, check the image for additional information
 * Analyze the entry to see if it provides additional clues to find other records of the person or their family

I Can’t Find the Person I’m Looking For, What Now?

 * Try searching by surname only
 * The person may be recorded with an abbreviated or variant form of their name
 * Remember that spelling was generally not standardized until the early part of the 20th century

Research Helps
The following articles will help you research your family in the state of Colorado.
 * Beginning Research in United States Naturalization Records
 * Colorado Guided Research
 * Colorado Research Tips and Strategies
 * Step-by-Step Colorado Research, 1880-Present

Other FamilySearch Collections
These collections may have additional materials to help you with your research.

FamilySearch Catalog

 * Newman, John J. American Naturalization Records;1790-1990: what they are and how to use them. Bountiful, Utah: Heritage Quest, 1998. FS Library 973 P47na
 * Szucs, Loretto Dennis They became Americans: finding naturalization records and ethnic origins Salt Lake City, Utah: Ancestry Publishing, c1998 FS Library 973 P47t
 * U.S. District Court. Colorado Naturalization Records (petitions & case files), 1876-1990
 * Naturalization records created by the U.S. District Courts in Colorado, 1877-1952: M1192
 * Colorado genealogist Denver, Colorado : Colorado Genealogical Society. Computer Interest Group, 1939- FS Library 978.8 B2cg

 County
 * Delta County, Naturalization records, v. 1-2, 1884-1906
 * Larimer County, Naturalization records ; Card indexes, 1872-1958, ca. 1872-1906
 * San Juan County, Declarations of intention ; Card indexes, 1878-1942, 1877-1929
 * San Juan County, Final naturalization records, 1904
 * San Juan County, Naturalization records, 1880-1906
 * San Juan County, Naturalization records, ca. 1882-1929

FamilySearch Digital Library

 * Survey of Federal Archives, Division of Professional and Service Projects, Work Projects Administration. Inventory of federal archives in the states, series 02, Federal Courts, no. 06, Colorado Denver, Colorado : Colorado Historical Records Survey, 1939
 * James C. Neagles and Lila Lee Neagles, Locating your immigrant ancestor : a guide to naturalization records Rev. ed. Logan, Utah : Everton Publishers, c1986

Citing This Collection
Citations help you keep track of places you have searched and sources you have found. Identifying your sources helps others find the records you used.