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Guide to Tuolumne County California genealogy. Birth records, marriage records, death records, census records, family history, and military records.

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Online Records

Tuolumne County, California
Map of the U.S. highlighting California
Location of California in the U.S.
Founded February 18, 1850
County Seat Sonora
Address Tuolumne County Courthouse
2 S Green Street
Sonora, CA 95370-4679
Phone: 209.533.5570
Tuolumne County Website


County Courthouse

County Clerk Recorder has birth records from 1858
marriage records from 1850, death records from 1859
burial records from 1916  divorce, probate, court and land  from 1850 and
old newspapers 1862-1948[1]

Historical Facts

Wikipedia has more about this subject: Tuolumne County, California

Parent County

18 February 1850: Tuolumne County was created as an original county. County seat: Sonora [2]

Boundary Changes

Record Loss


Populated Places

Neighboring Counties


Bible Records




For tips on accessing Tuolumne County, California Genealogy census records online, see: California Census.

Church History and Records

Court Records

Crime and Criminals


Ethnic, Political, or Religious Groups





Land and Property



Early migration routes to and from Tuolumne County, California Genealogy for emigrant settlers included:[3][4]

Military History and Records

Naturalization and Citizenship




Probate Records


Archives, Libraries and Museums

The official records of Tuolumne County, one of California's 27 original counties, are located in the Carlo M. De Ferrari Archive. The building was designed in 1997 by Cooper Kessel, an East Sonora architect and built by Barham Industrial Constructors, Inc. in 1999.  It was dedicated for public use on December 21, 1999, and officially opened on June 8, 2001

Address:  490 Greenley Rd., Sonora, Ca 95370

Phone: 209 536-1163

Email Contacts:  cdyer@co.tuolumne.ca.us   or www.tuolumnecounty.ca.gov

Hours:  By appointment, Monday through Friday

The archive was named in honor of Carlo M. De Ferrari, a third generation Tuolumne County native son and "Official Historian of Tuolumne County," a title bestowed in 1972 by the Tuolumne County Board of Supervisors in reocognition of his extensive knowledge of local history and his dedication to its preservation. 

The county archivist oversees general administration of the archive.  All records accepted for preservation in the archive must have a historical connection to official county governmental business. 

Over 250,000 records from this collection have been entered into the Archive's database for the public to access and query.  The public can access the collection via the Tuolumne County's website at the following portal.  

Carlo M. De Ferrari Archive (Tuolumne County Archive) 

To begin searching the archives, click the Archive Index button.
  The User Id for the public is Research; no Password is needed.

    Click the Enter button, then click Archives from the drop down list.

       Press Go.

Tuolumne County Library Website

The current listing of books is available via the internet on the Tuolumne County Library web page. The books are available for researchers at the archive as reference material.

County Courthouse

Family History Centers


The Tuolumne County Historical Society, established in 1956, is home to the Tuolumne County Museum, Tuolumne County Historical Society and the Tuolumne County Genealogical Society.


Vital Records





Voting Registers



  1. Handybook for Genealogists: United States of America, 10th ed. (Draper, Utah: Everton Pub., 2002), Tuolumne County, California. Page 88At various libraries (WorldCat); FHL Book 973 D27e 2002.
  2. The Handybook for Genealogists: United States of America,10th ed. (Draper, UT:Everton Publishers, 2002).
  3. National Park Service, "California Trail" (map) in California National Historic Trail at http://www.nps.gov/cali/planyourvisit/upload/CALImap1-web.pdf (accessed 5 August 2011).
  4. Wikipedia contributors, "California Trail" in Wikipedia: the Free Encyclopedia at http://en.wikipedia.org/wiki/California_Trail (accessed 5 August 2012).


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