Which Jefferson county? There are SEVERAL throughout the US..
According to fedstat.gov, the estimated population of Jefferson County, Kentucky, is 701,500.
According to census.gov, Jefferson County, Alabama, has the most population at 658,779 people in 2007.
Jefferson is a town in and the County Seat of Ashe County North Carolina. There is no Jefferson County in North Carolina.
Beaumont, TX is located in Jefferson County, Texas.
The town of Jefferson, Colorado is located in Park County.
As of the 2000 Census, the population of Jefferson County Idaho is, 19,155.
Jefferson County Jail - Kentucky - was created in 1905.
Jefferson County Christian School was created in 1978.
Jefferson County Alms House was created in 1813.
Jefferson County Courthouse - Iowa - was created in 1893.
Jefferson County Courthouse - Texas - was created in 1931.
Jefferson County Courthouse Annex was created in 1900.