Genealogy Trails

Welcome to Arapahoe County
Colorado Genealogy Trails!

Volunteers Dedicated to Free Genealogy
Our goal is to help you track your ancestors through time by transcribing genealogical and historical data and placing it online for the free use of all researchers.

This county is available for adoption!

If you are interested in joining Genealogy Trails as the host of any of our
county websites, view our Volunteer Page for all the ins and outs of becoming a host.

(Enough knowlege to make a basic webpage and a desire to transcribe data is required.)

Founded November 1, 1861
Named for The Arapaho Nation
Seat Littleton
Largest city Aurora
Arapahoe County Map
Arapahoe County originally stretched from the line of present-day Sheridan Boulevard 160 miles east to the Kansas state border, and from the line of present-day County Line Road, 30 miles north to the Parallel 40° North (168th Avenue). Denver City served as the county seat of Arapahoe County until 1902. In 1902, the county was split into Adams county and the city/county of Denver, with the rest remaining as part of Arapahoe county. So you'll want to check our Denver county website for data as well.

Arapahoe County calls itself "Colorado's First County" since it predates the Pike's Peak Gold Rush.

Cities, Towns and Other Communities
* Aurora * Bennett * Bow Mar * Centennial * Cherry Hills Village * Columbine Valley
* Deer Trail * Englewood * Foxfield * Glendale * Greenwood Village * Littleton * Sheridan
Unincorporated Places
* Byers * Castlewood (now part of Centennial) * Columbine
*Southglenn (now part of Centennial) * Strasburg * Watkins

Arapahoe County, Colorado Data


Birth Records


Census Records

County Records

County History

Death Records


Family Bibles

Marriages / Divorces


Miscellaneous Data and Books

Newspaper Items


Representative Women of Colorado


Wills/Probate Records


January 2018 - Bio (Knapp)
November 2017 - School News 3 added
July 2017 - Birth Announcements were added
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Visit the Counties bordering Arapahoe
Denver County
Adams County
Washington County
Lincoln County
Elbert County
Douglas County
Jefferson County
Visit the Colorado State Page
Visit our National Genealogy Trails Site

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