Search For Your Ancestors in Historical Documents




Boulder County, Colorado

Boulder County

Boulder County was founded on November 1, 1861 as one of the 17 original counties of the Territory of Colorado. The county was named for the abundance of granite boulders along Boulder Creek.

The Boulder County Seat is situated in Boulder and the county government website is

Places adjoining Boulder County happen to be Larimer County (north), Weld County (east), City and County of Broomfield (south), Jefferson County (south), Gilpin County (south), Grand County (west).

Cities and towns to be found in Boulder County include City of Boulder, Erie, Jamestown, Lafayette, Longmont, Louisville, Lyons, Nederland, Superior, Ward

Boulder County vital records can be found at the Colorado Office of Vital Records which has copies of birth, marriage, divorce and death records. There is a fee for each copy requested. Please refer to the information to the Statewide Vital Records in Colorado for current fees and application process.

You can search online for Boulder County Birth, Marriage, Divorce or Death Records. You can also Order Electronically Online or can download an application for Colorado Birth Certificate, Marriage Verification, Divorce Verification, Death Certificate Applications to mail.

Boulder County includes Federal Census Schedules to guide in exploring your family tree. Federal Population Schedules are present for 1870, 1880 (free index), 1890 (fragment), 1900, 1910, 1920, 1930, 1940.

Boulder Co. Mortality Schedules can be acquired for 1870 and 1880. Boulder Co. Industry and Agriculture Schedules is available for 1870 and 1880. Boulder Co. Union Veterans Schedules can be acquired for 1890. There are free online and printable census forms to aid with your research.

Boulder County Society and Family History Resources

A list of Boulder County Historical  and Genealogical Societies, Forums, Message Boards, Libraries, Archives.

Boulder County Courthouse and Government Records

Genealogist often forget the benefits of Boulder County court, probate, and land documents as a source of family history and genealogy details. Buried away in Colorado courthouses and archives just about everywhere could be the dreams and worries of many Colorado citizens. The chances are great that your potential ancestors and forefathers have left a detailed record of at least several aspects of their lives in the Boulder County court records. Even if your forebears is not mentioned in a Court case, give some thought to all of the other procedures that could have lead to him or her appearing in court records.

Please make sure to contact the clerk's dept to determine hours, mailing address, fees and other facts before visiting or seeking information because of from time to time changing contact information. The Department Offices DO NOT DO RESEARCH. The documents are available to interested parties, barring private issues. A lot of employees will guide men and women in obtaining the materials, but it's up to the man or women to undertake the researching.

The below facts denotes what birth, marriage, death, property, probate, and courtroom records are located in Boulder County. The years suggested below tend to be the first widely known records for this particular county.

Boulder was called Jackson County when it was part of Jefferson Territory.
  • Boulder County Courthouse (all departments listed below are located here, unless otherwise noted)
    • Address: 2020 13th st; PO Box 471, Boulder, CO 80302
    • Phone:303.441.7770 
  • Boulder County Clerk & Recorder is responsible for recording deeds, marriage licenses, issuing passports, titling and registering automobiles, issuing driver's licenses, registering voters, administering elections and maintaining records for the Board of County Commissioners.
    • Marriage Records: 1864
    • Land Records: 1864
  • Boulder County Clerk of Courts
    • Probate Records: 1864 ;  Estate files from 1862 are housed at the Colorado State Archives.
    • Court Records: 1864 
  • Boulder County Public Health
    • Birth / Death Records: 1880–1909 / 1880–1903 ; City Hall in Boulder.

Boulder County Links

The following are links to Genealogy, Records and Resources related to Boulder County. A majority of these genealogy links fall into 3 categories: Business oriented Sites, Private Sites or Organization Sites. Some have free access some require a fee. This is basically a collection that has been gathered or submitted. I do not endorse or promote one genealogy site over another. Feel free to submit your own favorite Boulder County genealogy or family history associated sites.

Boulder Co. CO Books, Newspapers & Publications

Boulder Co. CO Birth, Marriage & Death Records

Boulder Co. CO Court, Probate Land and Tax Records

Boulder Co. CO Census Records

Boulder Co. CO Cemeteries & Graveyards

Boulder Co. CO Church & Bible Records

Boulder Co. CO Family Websites, Pictures & Histories

Boulder Co. CO General and History Websites

Boulder Co. CO Maps, Atlases & Gazetteers

Boulder Co. CO Military Records

Boulder Co. CO Schools & Directories

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