Naturalization Records, 1867-1964 – Colorado County Courts (INDEX)

Colorado state naturalization records from 1867-1964, including names of individuals, spouses, counties, and citations to official records. Primary source for the data, originally created at the county level, comes from microfilmed records at the Colorado State Archives. Some original print records were returned to the county. All location information in the tables refer to the Colorado State Archives.

Data is not included for Boulder, Denver, Fremont, Las Animas, and Pueblo counties. References to sources for that data are provided in the appendix at the end of the document.