San Joaquin Genealogical Society
The San Joaquin Genealogical Society Welcomes You!
San Joaquin County Seal, 1888-1962
Click here to see an image of San Joaquin County's current seal.

The San Joaquin Genealogical Society (SJGS) serves those interested in genealogical research in San Joaquin County, which is located in the northern part of California's Central Valley. We also seek to provide genealogical training and resources for our members and local residents who are researching their roots in other parts of California, the United States, and worldwide.
SJGS is a non-profit organization incoporated in the State of California, and is not affiliated with any religious or political organization. Donations to SJGS are tax deductible as contributions under IRS code 501(c)(3). 
We hope you enjoy our new website, which "went live" in early 2017.1 We are continuing to make updates and improvements, so check back often for new information, and please bear with us as our site undergoes further construction/modification.

Special 2017 Membership Deal!
From now through December 31, any person or family who becomes a new member of the SJGS will be entitled to a free copy of one of these three publications:
Gold Rush Days Vol. III - Miscellaneous Records 1856 - 1862
Copied from Early Newspapers of Stockton, CA
Gold Rush Days Vol. IV - Births and Marriages 1856 - 1862
Copied from Early Newspapers of Stockton, CA
Gold Rush Days Vol. V - Births, Deaths and Marriages 1861 - 1866
Copied from Early Newspapers of Stockton, CA
See the "Membership" link to the left for general membership information and benefits, then follow the instructions on the "Online Join" link to complete your transaction. Once you make payment and receive your welcome email, send an email to and let us know which free bonus publication you'd like to receive. It will be sent to you by U.S. Mail.
NOTE: This special offer applies only to new first-time memberships, not renewals.

About San Joaquin County
San Joaquin County is one of California's original counties, created when California became a state in 1850. It's named for the 356-mile-long San Joaquin River, the longest river in California's Central Valley.
Incorporated cities currently within San Joaquin County are Escalon, Lathrop, Lodi, Manteca, Ripon, Stockton (the county seat), and Tracy; unincorporated communities are Acampo, Clements, Collegeville, Farmington, French Camp, Linden, Lockeford, Morada, Mountain House, Terminous, Thornton, Victor, Waterloo, and Woodbridge. Historic settlements and communities that no longer exist include Atlanta, Banta, Bellota, Burwood, Carnegie, Castoria, China Flat, Collierville, Cox's Ferry, Dent (now Escalon), Dogtown, Elliott, Fair Oaks, Five Corners, Henderson Village, Holt, Hope Landing, Liberty, Lincoln Village (now within Stockton), Middle River, Mokelumne City, Mormon, Peters, Poland, San Joaquin, New Jerusalem, Peters, Taison, Vernalis, and Youngstown. 
For a highly detailed 1895 map of San Joaquin County showing communities and property ownership, click on this link to the Library of Congress. From this site, you can download map images with different resolutions.
There are 11 townships in San Joaquin County: Castoria, Dent, Douglass, Elkhorn, Elliott, Liberty, O'Neal, Ripon, Stockton, Tulare, and Union. See the San Joaquin County ordinance code for legal descriptions of each township.

History of the San Joaquin Genealogical Society 2
On 10 January 1952, Mary Curtis, with the help of Naomi Carey, planned an organizational meeting to form a genealogy society in Stockton, California. There were twenty four charter members when the San Joaquin Genealogical Society was established in 1952. Sue Denuit served as our society's first president. From 1952 to 1956, all meetings were held in the homes of members.
In early 1956, Reginald R. Stuart, Director of the California History Foundation at the College of the Pacific (now the University of the Pacific), offered the SJGS space for its membership meetings in the California Western Americana Room on campus. Three shelves in that room were cleared to make space for SJGS's collection of genealogy reference books, many of which were donated or loaned to the society by SJGS members.
In 1963, the SJGS moved its genealogical book collection to the Stockton-San Joaquin County Public Library, Cesar Chavez Central Library, where it remains today. General membership meetings are now held at the Margaret J. Troke Branch Library.

1 Many thanks to current/former SJGS board members Sheri Fenley, Joy Ross, and Jacqi Stevens for their work on initial website development.
2 Research on SJGS history done by SJGS member Charlie Lambaren