There are forty-four Counties in Idaho. When Idaho became a territory in March, 1863, there were four Counties in existence: Boise, Idaho, Nez Perce and
Shoshone. By the time Idaho became a state, there were 15 counties. The rest of the 44 Counties came into existence during the 30 years after Idaho became a state. Two of the former counties disappeared
during this time. Alturas, which was created in 1864, was later divided into the many counties now found in
central Idaho. Logan County was only in existence for six years, from 1889 to 1895. It was combined with Alturas
to form Blaine County and Lincoln County, which was formed just two weeks after Logan lost its identity.
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Jefferson County Education, Geography, and History
JeffersonCounty is a county located in the state of Idaho. Based on the 2010 census, the
population was 26,140. The countyseat and
largest city is Rigby. The county was created in 1913.
Jefferson county named after Thomas Jefferson, the
third United States President.
Jefferson County is part of the Idaho Falls, ID Metropolitan Statistical Area.
Etymology - Origin of Jefferson County Name
Jefferson County is named for Thomas Jefferson (1743-1826), President of the United States from 1801 to