Costilla County, Colorado Genealogy
Guide to Costilla County, Colorado ancestry, genealogy and family history, birth records, marriage records, death records, census records, family history, and military records.
- 1 County Information
- 2 Resources
- 2.1 Bible Records
- 2.2 Biographies
- 2.3 Business, Commerce, and Occupations
- 2.4 Cemeteries
- 2.5 Census Records
- 2.6 Church Records
- 2.7 Court Records
- 2.8 Directories
- 2.9 Emigration and Immigration
- 2.10 Ethnic, Political, and Religious Groups
- 2.11 Funeral Homes
- 2.12 Genealogies
- 2.13 Guardianship
- 2.14 Land and Property Records
- 2.15 Local Histories
- 2.16 Maps and Gazetteers
- 2.17 Migration
- 2.18 Military Records
- 2.19 Naturalization and Citizenship
- 2.20 Newspapers
- 2.21 Obituaries
- 2.22 Other Records
- 2.23 Periodicals
- 2.24 Probate Records
- 2.25 School Records
- 2.26 Tax Records
- 2.27 Vital Records
- 3 Research Facilities
- 4 Societies
- 5 Websites
- 6 Research Guides
- 7 References
The County was named for Costilla River. The County has San Luis as its seat and the County was created November 1, 1861. The County is located in the south central area of the state.
Costilla County Courthouse
354 Main St PO Box 100
San Luis, CO 81152-0100
Costilla County Website
County Clerk has marriage and land records from 1853;
Clerk of the District Court has divorce, probate and court records.
Costilla County, Colorado Record Dates
Information for this chart was taken from various sources, often containing conflicting dates. This information should be taken as a guide and should be verified by contacting the county and/or the state government agency.
There is no known history of courthouse disasters in this county.
For a complete list of populated places, including small neighborhoods and suburbs, visit Hometown Locator. The following are the most historically and genealogically relevant populated places in this county:
Business, Commerce, and Occupations
In 1860, present-day Colorado was enumerated in the Kansas, Nebraska, New Mexico, and Utah Territories. Colorado Territory was created in 1861 and was enumerated as such in the 1870 Census. A state census was taken in 1885 for Colorado. See links listed below.
State and Territory Census Records
Federal Census Records
Church records vary significantly depending on the denomination and the record keeper. They may contain information about members of the congregation, such as age, date of baptism, christening, or birth; marriage information and maiden names; and death date. For general information about Colorado denominations, view the Colorado Church Records wiki page.
Online Church Records
LDS Ward and Branch Records
Numerous records are available at Colorado Archives. To use this link scroll down the page to where it asks for Record Type. Click there and scroll down the list to the records you want and select. The next field asks for county. Select the county you want and then click on Search. You can narrow the search by adding the additional information it asks for.
Emigration and Immigration
Ethnic, Political, and Religious Groups
Land and Property Records
Land and property records can place an ancestor in a particular location, provide economic information, and reveal family relationships. Land records include: deeds, abstracts and indexes, mortgages, leases, grants and land patents.
See Colorado Land and Property for additional information about early Colorado land grants.
After land was transferred to private ownership, subsequent transactions were usually recorded at the county courthouse, where current records are also housed.
For more information see Colorado Land and Property
Online County Histories
Maps and Gazetteers
Spanish-American War (1898)
World War I
For further information see Colorado Military Records.
Naturalization and Citizenship
For more information, see Colorado Newspapers.
Colorado Newspapers Online
Colorado Newspaper Catalogs
1890-1932 The Colorado State Archives has put an Index to the Costilla County Poor Records, 1890-1932 on-line.
Probate records have been kept by the county courts. Colorado probate records include bonds, affidavits, letters, claims, appraisals, fee accounts, minutes, judgments, dockets, calendars, case files, and wills. The Family History Library does not have copies of probate records from Colorado.
You may obtain copies of documents from the clerk's office in the county courthouse.
Colorado tax records complement land records and can be used as supplements to censuses. There may be gaps of several years in the records. To find tax records in the FamilySearch Catalog, do a Place Search for the county.
Vital Records consist of births, adoptions, marriages, divorces, and deaths recorded on registers, certificates, and documents. A copy or an extract of most original records can be purchased from the Vital Records Section Colorado Department of Public Health and Environment or the County Clerk's office of the county where the event occurred.
For some online statewide indexes, see the FamilySearch Historical Record Collections for Colorado.
Birth records may become public records when 100 years have elapsed after the date of birth. EXCEPTION: The birth record of any individual who is known to be currently alive will remain confidential even if they are 100 years of age or greater. 
Death records may become public records when 75 years have elapsed after the date of death. 
The Colorado State Archives has the following records available for Costilla County, Colorado Genealogy in this online database Archives Search. For a full list of online holdings, click here.
1876-1914 Costilla County Probate Record
Family History Centers
Family History Centers provide one-on-one assistance and free access to premium genealogical websites. In addition, many centers have free how-to genealogy classes.
Costilla County Public Library
Ft. Garland Heritage Association
San Luis Valley Historical Society