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Welcome...

The Jewish Genealogical Society (JGS) of Colorado is a leader in education, research, information exchange forums, and resources for Jewish genealogy.

Founded in 1995 by Miriam Ohr (z''l) and Sandra Greenberg, and as part of a network of 70 societies worldwide within the International Association of Jewish Genealogical Societies (IAJGS), the Society is a nonprofit and run 100% by volunteers. 

Learn More...

Are you interested in researching Jewish family history and looking for a local network of experts and enthusiasts?

JOIN US

We’re here to help by providing programs, support, and guidance to find and use resources located in Colorado and throughout the world. Please take a look through our website.

We encourage all levels of research from beginner to advanced to participate and share their knowledge. Take a look at the How to Get Started page where you’ll find useful information for all levels of research, and check out upcoming programs. Guests are always welcome. We meet once a month on Zoom on Sunday mornings. To help folks with their research questions, we start at 9:30 am and the guest speaker starts at 10 am, (Mountain Time) from September through June.

JGSCO is a nonprofit organization run entirely by volunteers. Annual dues of $30 per individual or $40 per household support the administration of the group including speaker and venue fees, website, and operations. Join here.

Join us at our next event

We are privileged to host 

Bennett Greenspan

the founder of Family Tree DNA

for our Annual Event

Unlock Deeper Insights Beyond Other DNA Tests




Sponsored by Marcia Levy & Ellen Beller


Sunday September 7th 2025

We promise to get you out before the Bronco game!

Registration at 9:30 am

Program begins promptly at 10 am 

In-person lunch only


In the Wolf Theater at the JCC in Denver 

350 S. Dahlia  St Denver Co  80246

We will be offering a ZOOM option at the

same price as the in person option

But, in person a continental breakfast and lunch will be served



  10 AM   Chromosomal Time Machine

(How I worked my Genealogy back to 150 CE)


  11:15 AM  The mtDNA of the Jewish people

and what’s new with

Family Tree DNA’s Mito tree


  12:15 PM  Lunch

included in inperson registration fee

Cohen Cuisine


  1 :15 PM  Ask Bennett Anything about your DNA


Bio:

Entrepreneur and life-long genealogy enthusiast Bennett Greenspan founded Family Tree DNA in 2000.  Family Tree DNA was the first company in the world to develop DNA testing for ancestry and genealogical purposes into a commercial business.   The Y chromosome test, the companies original product, started the Direct To Consumer  genetics testing revolution.

Mr. Greenspan’s business and entrepreneur experience spans photo-imaging and commercial real estate. In a prior career he oversaw the conversion of the companies sales force from analog to digital data capture.

Born Omaha Nebraska, 1952, Graduated High School in Nebraska,  1970

Bennett graduated The Univerisity of Texas  in the Gov’t Department. 1974

Married & recently celebrated his 40th anniversary and is the  father of with 2 children and recently enjoyed the birth of his 1st grandchild.  


$25 JGSCO Member Price

$35 Non Member

$25 ZOOM Member Price

$35 ZOOM Non Member Price 

Register at https://jgsco.org/event-6162071 

For those who are attending on ZOOM a link will be included in your registration and reminder emails



EVENTS, NEWS & UPDATES

Upcoming events

WEBSITE UPDATES

Members can login by clicking the Login button (upper right of the page). Don't know your password? Go to the login page and click the Forgot Password link.

There is an app for this site! To load the app, access this website from your mobile device and click the appropriate icon for the Wild Apricot Member app:

Android:

Apple iOS or iPadOS:


Need Help Getting Started?

The Jewish Genealogy Society of Colorado offers a Q & A session during monthly meetings.  Come 30 minutes early where we discuss and offer suggestions to your genealogy questions. We have found this is a great way to help enthusiats work through their 'brick walls.' 

Some of our members may also offer private research services. Fees and type of research should be negotiated individually. Results may vary and are not guaranteed, nor does the JGS of Colorado recommend or sponsor any individual researcher.

JOIN us

The Jewish Genealogical Society (JGS) of Colorado is a leader in education, research, information exchange forums, and resources for Jewish genealogy.

Mailing Address

Jewish Genealogical Society of Colorado
P.O. Box 460442
Denver, Colorado 80246

Email: info@jgsco.org

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© 2025 Jewish Genealogical Society of Colorado

JGSCO is a 501(c)3 non-profit organization.