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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GemCounty is a county in the state of Idaho. Based on the 2010 census, the
population was 16,719. Gem County was created
on March 15, 1915. The countyseat and largest city is
Emmett. The county is named for the State nickname of
Gem County is part of the Boise, ID Metropolitan Statistical Area.
Etymology - Origin of Gem County Name
Gem County is named for the Idaho state nickname of Gem State.
Established March 15, 1915 with its county seat at Emmett. Named for the state nickname, "Gem State." Fur
trappers were in the area as early as 1818 and Alexander Ross explored Squaw Creek in 1824. Prospectors and
miners moved through the county in 1862 in route to the gold rush in the Boise Basin, and by the next year
irrigation began along the Payette River.
Geography: Land and Water
As reported by the Census Bureau, the county has a total area of 566 square miles (1,470 km2), of which 561 square miles (1,450 km2) is
land and 4.8 square miles (12 km2) (0.8%) is water.
Gem county is located close to the center of Idaho. The county is the fifth-smallest county in Idaho by area.