Origin of Name "Idaho" is an invented
word. Area (rank) 83,574 sq mi (14th). Population
(rank) 1,612,136 (39th). Capital Boise. Admitted
to Union (rank) July 3, 1890 (43rd).
Dates in Idaho
1836 Two Presbyterian missionaries became the
first white settlers in Idaho. 1860 Mormons
founded the first permanent settlement in Idaho. March
4, 1863 Idaho Territory was established. July 3,
1890 Idaho became the 43rd state.
Territory in 1863
Officially established on March 4, 1863,
Idaho Territory originally included all of what are now
Idaho and Montana, as well as most of Wyoming.