Jefferson County, Colorado                 

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Welcome to Jefferson County, Colorado!

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Please contact the State Coordinator
to inquire into adopting Jefferson County.

Colorado State Coordinator:

 Gail Kilgore

Last Modified:

This site is part of the USGenWeb Project.

I cannot do lookups, so be sure to visit the "Research Help" section of the site for our Lookup Volunteers. Please be clear and complete when making your request. If you do email one of our lookup volunteers, please do not also post the same query on the Rootsweb Message Board as our volunteers also look there to fill requests.

Jefferson County is situated in the north central part of Colorado, just west of Denver and is considered the "Gateway to the Rocky Mountains." The gold rush brought settlers out to the area in the late 1850s. By 1861, enough people lived in the area to formally create the county, which was named for our third president, Thomas Jefferson. The County Seat of Jefferson is Golden. For more history go to the Jefferson County web site.

Neighboring counties include: Clear Creek, Gilpin and Park on the west, Boulder and Broomfield to the North, Denver and Arapahoe to the east and Douglas to the South.


I need your help! It is my goal to add more data to this site to help those researching their JeffCo roots. If you have family histories, obituaries, birth, marriage and death records, news stories or any other Jefferson County info, please contact me at
I need lookup volunteers! I am getting many requests for Tombstone photos, obit lookups, etc. Can you help? See "Research Help" for our current volunteers. Email me at

Search the Jefferson County message board archives or submit a query.

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Would you like to volunteer your time to this project? Write us at the email addresses below.

State Coordinator: Gail Kilgore


Assistant State Coordinators:

Ann Allen Geoghegan aka AnnieG

or Sundee Anderson Maynez

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