Editing Jefferson Territory (section)

==Counties==
{{see also|List of counties in Colorado}}
On November 28, 1859, the Territory of Jefferson created 12 [[county (United States)|counties]]:<ref name=Counties>{{cite book|chapter-url=https://books.google.com/books?id=kBc4AAAAIAAJ&pg=PA190|chapter=An Act Defining the Boundaries of Counties and for other purposes|title=Provisional Laws and Joint Resolutions of the General Assembly of Jefferson Territory|publisher=General Assembly of the Territory of Jefferson|date=November 28, 1859|access-date=November 6, 2014}}</ref>
#[[Arrappahoe County, Jefferson Territory|Arrappahoe County]], county seat [[Denver City, Jefferson Territory|Denver City]], evolved into [[Arapahoe County, Colorado Territory|Arapahoe]] and [[Douglas County, Colorado Territory|Douglas counties, Colorado Territory]].
#[[Cheyenne County, Jefferson Territory|Cheyenne County]] evolved into southern [[Laramie County, Wyoming|Laramie County, Wyoming Territory]].
#[[El Paso County, Jefferson Territory|El Paso County]], county seat [[Colorado City, Jefferson Territory|Colorado City]], evolved into [[El Paso County, Colorado Territory]].
#[[Fountain County, Jefferson Territory|Fountain County]], county seat [[Pueblo, Jefferson Territory|Pueblo]], evolved into [[Pueblo County, Colorado Territory|Pueblo]], [[Fremont County, Colorado Territory|Fremont]], and [[Huerfano County, Colorado Territory|Huerfano counties, Colorado Territory]].
#[[Heele County, Jefferson Territory|Heele County]], county seat [[La Porte, Jefferson Territory|La Porte]], evolved into eastern [[Larimer County, Colorado Territory]].
#[[Jackson County, Jefferson Territory|Jackson County]], county seat [[Boulder City, Jefferson Territory|Boulder City]], evolved into [[Boulder County, Colorado Territory]]
#[[Jefferson County, Jefferson Territory|Jefferson County]], county seat [[Arapahoe City, Jefferson Territory|Arapahoe City]], evolved into [[Jefferson County, Colorado Territory]]
#[[Mountain County, Jefferson Territory|Mountain County]], county seat [[Central City, Jefferson Territory|Central City]], evolved into [[Gilpin County, Colorado Territory|Gilpin]] and [[Clear Creek County, Colorado Territory|Clear Creek counties, Colorado Territory]].
#[[North County, Jefferson Territory|North County]] evolved into western [[Larimer County, Colorado Territory]].
#[[Park County, Jefferson Territory|Park County]], county seat [[Tarryall City, Jefferson Territory|Tarryall City]], evolved into [[Park County, Colorado Territory]].
#[[Saratoga County, Jefferson Territory|Saratoga County]], county seat [[Breckinridge, Jefferson Territory|Breckinridge]], evolved into [[Summit County, Colorado Territory]].
#[[St. Vrain's County, Jefferson Territory|<span style="display:none">Saint Vrain's County</span>St. Vrain's County]], county seat [[Saint Vrain, Jefferson Territory|<span style="display:none">Saint Vrain</span>St. Vrain]], evolved into [[Weld County, Colorado Territory]].