is the fourth most populous county of the State of Colorado.
The county seat is Golden and the most populous city is Lakewood.
County was was formally organized in 1861 by the Colorado Territorial
and named after U.S. President Thomas Jefferson.
the history of Jefferson County
Arvada (mostly) * Edgewater * Golden
* Lakewood * Littleton (partially) * Westminster (partially) * Wheat
Bow Mar * Lakeside * Morrison
Vernon * Mountain View * Ralston
Platte * Superior (partially)
Applewood * Aspen Park * Columbine *
Conifer * East Pleasant View * Evergreen
* Genesee * Indian Hills * Ken Caryl
* Kittredge * West Pleasant View