Place:Jefferson, Colorado, United States

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NameJefferson
Alt namesJeffersonsource: Getty Vocabulary Program
TypeCounty
Coordinates39.633°N 105.267°W
Located inColorado, United States     (1861 - )
Contained Places
Census-designated place
Applewood
Aspen Park
Columbine
East Pleasant View
Evergreen
Genesee
Indian Hills
Ken Caryl
Kittredge
West Pleasant View
Inhabited place
Archer
Arvada
Bergen Park
Broken Arrow Acres
Buffalo Creek
Cliffdale
Cody Park
Conifer
Critchell
Crossons
Deermont
Dome Rock
Edgewater
Eggers
El Rancho
Elephant Park
Elk Creek Acres
Fenders
Ferndale
Fire Clay
Foxton
Glenelk
Golden
Green Valley Acres
Herzman Mesa
Hidden Valley
Hiwan Hills
Homewood Park
Idledale
Indian Springs Village
Indians Hills
Kassler
Lakeside
Lakewood
Leyden Junction
Leyden
Longview
Marshdale
Morrison
Mount Vernon Club Place
Mountain View
Oehlmann Park
Oxyoke
Paradise Hills
Pine
Plastic
Pleasant View
Riverview
Rosedale
Semper
Shaffers Crossing
Silver Springs
Sky Village
Snow Water Springs
South Platte
Sphinx Park
Sprucedale
Stanley Park
Tiny Town
Trumbull
Twin Forks
Twin Spruce
Wah Keeney Park
Wandcrest Park
Wheat Ridge
Unknown
Fairmount
Medlen
source: Getty Thesaurus of Geographic Names
source: Family History Library Catalog


the text in this section is copied from an article in Wikipedia

Jefferson County is a county located in the U.S. state of Colorado. As of the 2020 census, the population was 582,910, making it the fourth-most populous county in Colorado. The county seat is Golden, and the most populous city is Lakewood.

Jefferson County is included in the Denver-Aurora-Lakewood, CO Metropolitan Statistical Area. Located along the Front Range of the Rocky Mountains, Jefferson County is adjacent to the state capital of Denver.

In 2010, the center of population of Colorado was located in Jefferson County.

The county's slogan is the "Gateway to the Rocky Mountains", and it is commonly nicknamed Jeffco. The name Jeffco is incorporated in the name of the Jeffco School District, the Jeffco Business Center Metropolitan District No. 1, and several businesses located in Jefferson County. Jeffco is also incorporated in the unofficial monikers of many Jefferson County agencies. The Rocky Mountain Metropolitan Airport operated by Jefferson County was previously known as the Jeffco Airport.

A major employer in Jefferson County is the large Coors Brewing Company in Golden. Also, the state-supported Colorado School of Mines, a university specializing in mining, geology, chemistry, and engineering is located in Jefferson County.

Contents

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Timeline

Date Event Source
1861 County formed Source:Red Book: American State, County, and Town Sources
1870 First census Source:Population of States and Counties of the United States: 1790-1990
1874 Marriage records recorded Source:Red Book: American State, County, and Town Sources
1893 Birth records recorded Source:Red Book: American State, County, and Town Sources
1980 No significant boundary changes after this year Source:Population of States and Counties of the United States: 1790-1990
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Population History

source: Source:Population of States and Counties of the United States: 1790-1990
Census Year Population
1870 2,390
1880 6,804
1890 8,450
1900 9,306
1910 14,231
1920 14,400
1930 21,810
1940 30,725
1950 55,687
1960 127,520
1970 233,031
1980 371,753
1990 438,430
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Cemeteries

Cemeteries of Jefferson County, Colorado, United States

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Research Tips

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