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Jefferson County, Colorado
Genealogy and History

Founded: 1 Nov 1861
The county seat is Golden.

Jefferson County was named for the namesake of the Jefferson Territory, Thomas Jefferson, the principal author of the Declaration of Independence and the nation's third president.


Welcome to this Jefferson County, Colorado Genealogy Trails Website. My name is Julie and I am your county host.


Jefferson County is the fourth most populous county of the State of Colorado. The count seat is Golden and the most populous city is Lakewood. Jefferson County was formally organized in 1861 by the Colorado Territorial Legislature and named after U.S. President Thomas Jefferson. Read the history of Jefferson County.

Cities: Arvada (mostly) - Edgewater - Golden - Lakewood - Littleton (partially) - Westminster (partially) - Wheatridge

Towns: Bailey - Bow Mar - Buffalo Creek - Conifer - Idledale - Lakeside - Morrison - Mount Vernon - Mountain View - Pine - South Platte - Ralston - Resort - Semper - South Platte - Superior (partially)

Census-designated places: Applewood - Aspen Park - Columbine - Conifer - East Pleasant View - Evergreen - Genesee - Indian Hills - Ken Caryl - Kittredge - West Pleasant View

Elijah L. West brought to the section, and put into active operation, the first combined mowing and reaping machine ever used in Jefferson county. Mr. West is justly recognized as one of the very first settlers in the Wheatridge section, the entire region being an undeveloped wilderness at the time of his location here. Not only has he been a witness to the growth and developments of the community, but has also had active part in bringing about the transition. He was also one of the most active workers in organizing the Wheatridge Grange, of which he became a charter member and was elected the first master, a position he has filled, at various times, to the extent of more than ten years. This was the first Grange to be established in Colorado, receiving Charter No. 1.
History of Colorado, Vol 4, by Wilbur Fiske Stone, 1919 - transcribed by J.S.

In 1873 George W. Harriman was the builder of a large reservoir, the first in Colorado, and he became the father of the great system of storage reservoirs now so prominent a feature in the development of the state and the promotion of its agricultural interests.
History of Colorado, Vol 4, by Wilbur Fiske Stone, 1919 - transcribed by J.S.

In the fall of 1861, Joseph C. Remington was elected first Sheriff of Jefferson Co, under the United States Government.
History of Clear Creek and Boulder Valleys, Colorado, by A. Bixby; Chicago; O. L. Baskin & Co., Historical Publishers, 1880 - transcribed by J.S. pages 547-599

This is a farming region, about 6 miles north of Golden City. A neat little frame church was built here under the pastorate of Rev. Jesse Smith, costing about $1800. This is the first strictly rural church ever built in Colorado. The pastors of this circuit have been W.M. Smith, D.W. Scott, Jesse Smith and G.W. Swift, the present pastor.
The Rocky Mountain Directory and Colorado Gazetteer for 1871, transcribed by J.S.

Online Data

Adjacent Counties County Resources

Biographies Births
Cemeteries Census
Churches Cities & Towns
County Records Court Records
Deaths Directories
Family Stories History
Land Records Marriages
Military News Articles
Obituaries Passports
Pictures Schools
Societies/ Clubs State Executions

Wills/ Probate

Website Updates:

Societies/ Clubs: Farmer's Clubs in Colorado; Patrons of Husbandry - Organization of the First Granges in Colorado

Directory: 1880 Business and Mining Directory
Land Records: Arvada 1870, 1899, Denver Land Office Records

Bios: A.B. Daniels, Prof. William Van Cleve Casey, Hon. Albinus Z. Sheldon, Hon. Nathan Brown Coy, Aaron S. Benson, A.S. Elwood,
Census: 1900 Federal for Semper, pg 4a, 4b,

Bios: A.B. Daniels, Prof. William Van Cleve Casey, Hon. Albinus Z. Sheldon, Hon. Nathan Brown Coy, Aaron S. Benson, A.S. Elwood,
Census: 1900 Federal for Semper, pg4a,4b

Census: 1900 Federal for Ralston and Reservoir (both complete)

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