Genealogy Trails History Group Finding Ancestors wherever their trails led

Welcome to
Arapahoe County Colorado
History and Genealogy

Volunteers Dedicated to Free Genealogy

This county is available for adoption!

This website is part of the Genealogy Trails family.
Our Group's 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.

We're looking for folks who share our dedication to keeping Genealogy free and are interested in helping this project be as successful as we can make it.
Learn more about joining our group as a county host and then CONTACT US.

We welcome any information you may wish to provide for the free research of others.
So, dust off those old scrapbooks you have in your attic, dig out those old newspapers, or anything else you feel is of interest to this County, and send them our way. We are looking for obituaries, newspaper stories, biographies, Birth, Death and Marriage records, as well as interesting newspaper tidbits from years gone past - the items YOU used to put together your family trees. If you have information that you'd like to share with us on the history of this county and its people, please send it to us and we'll make sure it gets posted online.
If you have any comments, questions or data contributions,

All data we come across will be added to this website, so please keep checking back.

Founded November 1, 1861
Named for The Arapaho Nation
Seat Littleton
Largest city Aurora

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.

snow pix

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

Online Data


Church Histories / Records

County Records

Death Records

Family Bibles

Miscellaneous Data

School Records

Website Updates
Dec 2014:
Arapahoe County

Previous Updates

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Adjacent Counties
* Denver County - northwest
Adams County - north
Washington County - east
Lincoln County - southeast
Elbert County - south
Douglas County - southwest
Jefferson County - west

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