Jefferson County, Colorado Genealogy
Guide to Jefferson 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 Thomas Jefferson. The County has Golden as its seat and the County was created November 1, 1861. The County is located in the north central area of the state.
Jefferson County Courthouse
100 Jefferson County Pkwy #2530
Golden, CO 80419-2530
Jefferson County website
Jefferson County Vital Records
800 Jefferson County Parkway
Golden, CO 80419
Jefferson Co. website
Has Birth and Death Certificates
County Clerk has marriage records from 1868 and land records from 1860;
County Health Department has birth, death and burial records;
Clerk District Court has divorce records;
County Court has probate and court records
Jefferson 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:
A chronological history timeline for Jefferson County can be found on the county website.
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
- 1860 - United States Census, 1860 at FamilySearch Historical Records — index and images; Colorado was included in the 1860 Kansas, Nebraska, New Mexico, and Utah Territories Censuses
- 1870 - United States Census, 1870 at FamilySearch Historical Records — index and images; Colorado Territory Census
- 1885 - Colorado State Census, 1885 at FamilySearch - Index and images
- 1885 - Colorado State Census, 1885 at Ancestry - ($), Index and images
Federal Census Records
- 1860-1940 Colorado Census Records from 1860 to 1940 at FamilySearch.org — index/images
Church records vary significantly depending on the denomination and the record keeper. They may contain information about members of the congregation, such as age, date of baptism, christening, or birth; marriage information and maiden names; and death date. For general information about Colorado denominations, view the Colorado Church Records wiki page.
Online Church Records
- 1743-1970 - U.S., Presbyterian Records, 1743-1970 at Ancestry — ($); Index and images; Dates vary for each county
- '1932-1933 - U.S. City Directories, 1822-1995 at Ancestry - ($), Index and images, Jefferson County Directories
Emigration and Immigration
Ethnic, Political, and Religious Groups
Land and Property Records
Land and property records can place an ancestor in a particular location, provide economic information, and reveal family relationships. Land records include: deeds, abstracts and indexes, mortgages, leases, grants and land patents.
See Colorado Land and Property for additional information about early Colorado land grants.
After land was transferred to private ownership, subsequent transactions were usually recorded at the county courthouse, where current records are also housed.
Online Land Records
- Colorado DPA Land Records - Index only; Choose Record Type, and search either "Land Patents" or "Land Records."
- Land Patent Search - index to federal patents and homesteads on the Bureau of Land Management website, some images available
- 1796-1907 - U.S. General Land Office Records, 1796-1907 at Ancestry - index, info taken from Bureau of Land Management website
- 1863-1908 - U.S. Homestead Records 1863-1908 at Ancestry.com - ($), index and images
- 1862-1908 - Denver Land Office Records, 1862-1908 at Ancestry.com - ($), index only
For more information see Colorado Land and Property
Online County Histories
- History of Clear Creek and Boulder Valley, Colorado. 1880. By Sanford Charles Gladden. Chicago, Illinois : O.L. Baskin. Online at: FamilySearch Books Online, Hathitrust, Internet Archive; At various libraries (WorldCat).
Maps and Gazetteers
- Interactive Formation Boundary Map of Colorado - shows boundary changes for Colorado Counties
- Colorado Historical Boundary Changes - list of all boundary changes by county provided by Newberry Library
- Colorado State Archives Veterans Grave Registration Index at the Colorado State Archives website - Index only; In the Record Type field, select, Military - Grave
- Colorado Civil War Casualties Index at the Colorado State Archives website - Index only; In the Record Type field, select, Civil War Casualty
- 1861-1865 - Colorado State Archives Volunteers Transcript of Record Index (1861-1865) at the Colorado State Archives website - Index only; In the Record Type field, select, Transcript of Record
Spanish-American War (1898)
- 1898 - Colorado Volunteers in the Spanish American War, 1898 - at the Colorado State Archives website - Index only; In the Record Type field, select, Span-Am War Soldiers
World War I
- 1916-1919 - Colorado State Archives Denver War Risk Insurance Applicants, 1916-1919 - at the Colorado State Archives website - Index only; In the Record Type field, select, War Risk Insurance
- 1917-1922 - Colorado State Archives World War I Civilian Service Questionnaires, 1917-1922 - at the Colorado State Archives website - Index only; In the Record Type field, select, WWI Questionnaire
- 1917-1918 - Colorado Soldiers in WWI, 1917-1918 at Ancestry.com — ($), index
- 1966 & 1968 - Colorado State Archives Vietnam War Casualties - June-December 1966 & January-December 1968 - at the Colorado State Archives website - Index only; In the Record Type field, select, Vietnam Deaths
For further information see Colorado Military Records.
Naturalization and Citizenship
- 1868-1990 - Colorado, State and Federal Naturalization Records, 1868-1990 at Ancestry ($); Index and images
- 1876-1990 - Colorado Naturalization Records, 1876-1990 at FamilySearch - Browseable images only; District Court records
For more information, see Colorado Newspapers.
Colorado Newspapers Online
- Colorado Online Historical Newspapers online - in the Colorado Historic Newspaper Collection by the Colorado State Library
- Colorado Newspapers at Ancestry.com - ($)
- GenealogyBank - ($), contains images of Colorado newspapers
- Newspaper Archive - ($), contains images of Colorado newspapers
- Chronicling America - contains images of some Colorado newspapers; searching tips
- Elephind - Free; search engine that retrieves newspaper images from other free newspaper websites
Colorado Newspaper Catalogs
- U.S. Newspaper Directory, 1690-Present on Chronicling America - contains a list of all known newspapers and the dates they cover; once you locate a newspaper name, contact the local library to see if they have copies of the newspaper
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.
1913-1945 Colorado State Archives has put the Jefferson County Inheritance Tax Records Index for 1913-1945 on-line.
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.
See also the Colorado Vital Records.
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. 
For in-state births from 1903 to present, certificates can be obtained from Jefferson County Vital Statistics office. For birth certificates before 1903 contact the county where the birth occurred or the State Health Department at (303) 756-4464.
If you are obtaining a birth certificate for a sibling, parent, grandparent, etc., you will need to show chain of relationship. Examples are: A sibling could provide their birth certificate to show same parents. If you are trying to get a grandparent's birth certificate you will need to show your birth certificate, plus your parent's birth certificate to show chain of relationship. If you have questions on this please call our office at 303-271-6450.
The Jefferson County Recorder's office will search their indexes if you call or come in to the office. If a record is found, a copy can be purchased in person or by mail. Call 303-271-8121.
- 1784-2007 - Colorado, United States Marriages at FindMyPast — index $
- 1809-2011 - Western States Marriage Index, 1809-2011 - Index, incomplete, list of counties included
- 1853-2006 - Colorado Statewide Marriage Index, 1853-2006 at FamilySearch.org - Index and images
- 1862-2006 - Colorado, County Marriages and State Indexes, 1862-2006 at Ancestry ($), Index and images
- 1864-1995 - Colorado, County Marriages, 1864-1995 at FamilySearch - Index and images
- 1900-1939 - Colorado, Statewide Marriage Index, 1900-1939 at Ancestry.com - ($); Browseable images of original index
Death records may become public records when 75 years have elapsed after the date of death. 
Certificates can be obtained from the Jefferson County Vital Statistics office.To obtain a recent death certificate, you must show a direct and tangible interest to the deceased. Relatives include wife, mother, father, child (if they are listed on the death certificate). If they are not listed on the death certificate they must show proof of relationship. This would include maternal grandparents, paternal grandparents, siblings if they can prove chain of relationship. If you have questions on this please call our office at 303-271-6450.
All divorces and divorce records are handled by the Jefferson County Combined Courts, Colorado Judicial District 1. Please contact their office directly at 303-271-6145 or Fax: 303-271-6188.
Jefferson County Combined Courts
100 Jefferson County Parkway
Golden CO 80401
- 1851-1985 Colorado, Divorce Index, 1851-1985 at Ancestry - ($); Index only
- 1900-1939 - Colorado Statewide Divorce Index, 1900-1939 at FamilySearch - Browseable images of original index
The Colorado State Archives has the following records available for Jefferson County, Colorado Genealogy in this online database Archives Search. For a full list of online holdings, click here.
1880-1939 Divorce Index
1883-1900 Mine Accidents, Non - fatal
1936-1942 Civilian Conservation Corps Enrollments
1966-1968 Vietnam Deaths
1862-1977 Jefferson County Probates
1864-1886 Jefferson County Civil Cases
1868-1930 Jefferson County Coroner Reports
1913-1945 Jefferson County Inheritance
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.
- Arvada Colorado Family History Center
- Columbine Colorado Family History Center (Littleton)
- Golden Colorado Family History Center
- Lakewood Colorado Family History Center
Jefferson County Public Library
10200 W 20th Ave
Lakewood, CO 80215
Phone: (303) 235-5275
Jefferson Co. Public Lib. website
List of all societies for Jefferson County can be found on their County website.
Golden Landmarks Association
14th and Washington St.
PO Box 1136
Golden, Colorado 80402-1136
- FamilySearch Catalog - The FamilySearch catalog contains descriptions and access information for all genealogical materials (including books, online materials, microfilm, microfiche, and publications) in their collection. Use Historical Records to search for specific individuals in genealogical records
- Jefferson County, Colorado Genealogy and Family History (Linkpendium)
- The Handybook for Genealogists: United States of America,10th ed. (Draper, UT: Everton Publishers, 2002).
- Wikipedia contributors, "Jefferson, Colorado," in Wikipedia: the Free Encyclopedia, https://en.wikipedia.org/wiki/Jefferson_County,_Colorado 6/29/2017.
- Handybook for Genealogists: United States of America, 10th ed. (Draper, Utah: Everton Pub., 2002), Jefferson County, Colorado. Page 99 At various libraries (WorldCat); FHL Book 973 D27e 2002.
- Handybook for Genealogists: United States of America, 10th ed. (Draper, Utah: Everton Pub., 2002), Jefferson County, Colorado. Page 99 At various libraries (WorldCat); FHL Book 973 D27e 2002; Alice Eichholz, ed. Ancestry’s Red Book: American State, County, and Town Sources, Third ed. (Provo, Utah: Ancestry, 2004), 93.
- The Handybook for Genealogists: United States of America,10th ed. (Draper, UT: Everton Publishers, 2002).
- Wikipedia contributors, "Jefferson County, Colorado," in Wikipedia: the Free Encyclopedia, https://en.wikipedia.org/wiki/Jefferson_County,_Colorado, accessed 28 May 2017.
- William Thorndale and William Dollarhide, Map Guide to the U.S. Federal Censuses (Bountiful, UT: American Genealogical Lending Library, 1985), page 51-54; Alice Eichholz, ‘’Ancestry’s Red Book: American State, County and Town Sources,’’ 3rd ed. (Salt Lake City: Ancestry, 2004), 86. Free online version; FHL Book 973 D27rb 2004; WorldCat entry.
- William Thorndale and William Dollarhide, Map Guide to the U.S. Federal Censuses (Bountiful, UT: American Genealogical Lending Library, 1985), page 54.
- Letter from Colorado State Registrar, Dated September 1, 2011. Policy Number 2011- 08. http://www.colorado.gov