• Jefferson County Archives


    Jefferson County Archives collects and preserves the historically valuable records of Jefferson County Government as well as other records of historical or documentary significance relating to the history of the county. Our collections date from 1859.

    Jefferson County Archives home page

        Archival Collections   

        History of Jefferson County

        Place Names Database

        Reference Books


         Research is by appointment only. Citizens may call or email the County
         Archivist to make a request or to schedule a research appointment.
         303-271-8448 or archivist@jeffco.us.

    Jefferson County Archives home page

    The Archives maintains a small reference library containing published books relating to Jefferson County history as well as Colorado history. These reference books are available for use in the Archives’ Reading Room only; no material from the Archives may be checked out. (Some of these materials may be available at local libraries.)

    We also have Jefferson County Historical Commission publications available for sale, including current and back issues of Historically Jeffco magazine and From Scratch: A History of Jefferson County, Colorado.