About the Records
The Colorado State Archives has naturalization records for many of the counties in Colorado. People, immigrating to Colorado between 1861 and 1906 could file for naturalized status in the county, district, or sometimes even the criminal courts. While this function became primarily a federal responsibility thereafter, many state district courts continued to record naturalizations after 1906.
Before 1906, the primary record series include which were usually filed in a Naturalization Record volume. These earlier naturalization records include less information than later documents. Typically, there is only the applicant's name, the name of the clerk of the court, the name and title of the head of state the applicant renounced allegiance to, and the date of the document.
Also note, between 1855-1922 alien women were granted automatic citizenship if they were the wife of a United States or naturalized citizen. Therefore, we may not have any specific documentation showing the naturalization of a woman during this time period.
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