Arapahoe County, Colorado Genealogy

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United States > Colorado > Arapahoe County

County Courthouse

Araphaoe – Arapahoe County Courthouse
5334 S Prince Street
Littleton, CO 80166-0001
Phone: 303.795.4200

First formed in 1855 as Territorial County. See Kansas 1860 for census records)
County Clerk has marriage and land records from 1902 burial records to 1941; County Court has divorce, probate and court records[1]

Quick Facts

Parent County

1855--Arapahoe County was created as an original county in Kansas Territory.

1 November 1861: Arapahoe County was created as an original county in Colorado Territory.
County seat: Littleton [2]

Boundary Changes

Record Loss

Places / Localities

Populated Places

Neighboring Counties




For tips on accessing Arapahoe County, Colorado Genealogy census records online, see: Colorado Census.

The Colorado Genealogical Society's 1885 Colorado State Census - Arapahoe County    PDF File with every name indexed

Church History and Records

LDS Ward and Branch Records

  • Englewood

Court Records

Arapahoe County Old Age Pension Records 1933-1936. An Index compiled from the offical record of the applications granted by the Arapahoe County Commissioners during these years. Record may show the following:

  • Name of Applicant
  • Date and Amount of pension payment
  • Any adjustments to the pension
  • Person's age
  • Town nearest to where they lived
  • Other Actions done by the County


Local Histories

Biographies of Prominent Families of Littleton, Arapahoe, Colorado.

Early History of Littleton, Arapahoe, Colorado.




Poor Records

Colorado State Archives has put an Index to the Arapahoe County Poor Hospital Records for 1895-1899 on-line.


Colorado State Archives web site has Arapahoe county Probate cases 1902-1937.


Vital Records

Colorado Vital Records Seach

Voting Registers

Arapahoe County Voter Registrations index (1893-1905) is one of many On-Line Indexes of the Colorado State Archives.

Societies, Libraries and Museums

Arapahoe Library District
12855 E. Adam Aircraft Circle
Englewood, CO 80112
Telephone: 303-798-2444

Aurora Public Library
14949 E Alameda Parkway
Aurora, CO 80012
Telephone: 303-739-6640

Englewood Public Library
1000 Englewood Parkway
Englewood, CO 80110
Telehone: 303-762-2572

Littleton/Bemis Public Library
6014 S. Datura St.
Littleton, CO 80120
Telephone: 303-795-3961

Columbine Genealogical and Historical Society
P.O. Box 2074
Centennial, CO 80161-2074

Sheridan Historical Society
4101 S. Federal Blvd.
Sheridan, CO 80110-5399

Aurora Genealogical Society
P.O. Box 31732
Aurora, CO 80041-0732

Family History Centers



  1. Handybook for Genealogists: United States of America, 10th ed. (Draper, Utah: Everton Pub., 2002), Alraphoe County, Colorado. Page 97At various libraries (WorldCat); FHL Book 973 D27e 2002.
  2. The Handybook for Genealogists: United States of America,10th ed. (Draper, UT:Everton Publishers, 2002).