to Arapahoe County
Colorado Genealogy Trails!
Volunteers Dedicated to Free
Our goal is to help you track your ancestors through time by
genealogical and historical data and placing it online for the free use
of all researchers.
county is available for adoption!
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
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
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
* Aurora * Bennett * Bow Mar * Centennial * Cherry Hills
Village * Columbine Valley
* Deer Trail * Englewood * Foxfield * Glendale * Greenwood Village *
Littleton * Sheridan
* Byers * Castlewood (now part of Centennial) * Columbine
*Southglenn (now part of Centennial) * Strasburg * Watkins