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 - )
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 (JeffCo) , whose slogan is the "Gateway to the Rocky Mountains", is the fourth most populous of the 64 counties of the State of Colorado of the United States. Located along the Front Range of the Rocky Mountains, Jefferson County is adjacent to the west side of the state capital, Denver. The county population was 534,543 according to the 2010 census. The county seat is Golden and the most populous city is Lakewood. Jefferson County is part of the Denver-Aurora Metropolitan Statistical Area and the Denver-Aurora-Boulder Combined Statistical Area. As of 2002, Jefferson County contains the state's center of population.

Jefferson County 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 is located in Jefferson County, offering programs in STEM topics such as mining, geology, chemistry, and engineering.

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

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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