Costilla County, Colorado GenealogyEdit This Page

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United States Gotoarrow.png Colorado Gotoarrow.png Costilla County

Hand and keyboard.jpg Colorado
Online Records


County Courthouse

Costilla County Courthouse;
354 Main St; PO Box 100;
San Luis, CO 81152-0100
Phone: 719.672.3372

County Clerk has marriage and land records from 1853;
Clerk District Court has divorce, probate and court records.[1]

Quick Facts

Parent County

  • Before 1861 this modern Colorado county was in New Mexico.
Look for pre-1861 records in New Mexico. For further explanation see Taos County.
  • 1 November 1861: Costilla County was created as an original county. County seat: San Luis.[1]

Boundary Changes

Record Loss

Places / Localities

Populated Places

Neighboring Counties




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

Church Records

LDS Ward and Branch Records

  • Barnum
  • Crestmoor (Denver)
  • Dale E.
  • Denver
  • Denver 1
  • Denver 2
  • Denver N.
  • East Dale

Court Records

Land and Property



Military Records


Poor Records

The Colorado State Archives has put an Index to the Costilla County Poor Records, 1890-1932 on-line.  Read more aboutCostilla_County,_ColoradoPoor Record Index 1890-1932. ]

Probate Records


Vital Records

Colorado Vital Records Search


Societies and Libraries

Costilla County Public Library
PO Box 351
418 Gasper Street
San Luis, CO 81152
Phone: (719) 672-3309

Family History Centers

Web Sites


  1. 1.0 1.1 1.2 Handybook for Genealogists: United States of America, 10th ed. (Draper, Utah: Everton Pub., 2002), 98, Costilla County, Colorado. At various libraries (WorldCat); FHL Book 973 D27e 2002.
  2. William Thorndale and William Dollarhide, Map Guide to the U.S. Federal Censuses, 1790-1920 (Baltimore: Genealogical Publ., 1987), 52. At various libraries (WorldCat); FHL Book 973 X2th.
  3. Brief County Histories (New Mexico) in RootsWeb (accessed 21 June 2012).
  4. Wikipedia contributors, "Colorado Territory" in Wikipedia: the Free Encyclopeida at (accessed 19 June 2012).
  5. Adrian B. Ettlinger, AniMap 3.0 : with SiteFinder U.S. place name database (Alamo, Calif.: Gold Bug, 2008), Colorado 1861 map. At various libraries (WorldCat); FHL CD-ROM no. 4903.


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