US Postage Stamps // Philatelic Project // The Federal States


Idaho // Boise, Ada County, ID // Western Region // Mountain/Pacific Time
(The Gem State, inofficially The Potato State)
Territory established[1]: March 4, 1863,
area reduced on May 26, 1864
Statehood granted: July 3, 1890 // 43rd state
[1] Idaho Territory was originally created from portions of Washington Territory (from British cession in 1846), Dakota, and Nebraska Territories (from Lousiana Purchase in 1803). On May 26, 1864, Montana Territory was split from Idaho Territory, which also returned some land to Dakota Territory. The remaining area of the Idaho Territory became the State of Idaho twenty-six years later.
[View map of US territorial acquisition]

#4288 // September 2, 2008
(self-adhesive coil definitive)
Flags of Our Nation Series
Idaho State Flag
and rainbow trout
#1964 // April 14, 1982
(ex pane of 50 different stamps)
State Bird & Flower of
Mountain Bluebird
(Sialia currucoides)
and Syringa
#1675 // February 23, 1976
(ex pane of 50 different stamps)
American Bicentennial Series
Idaho State Flag

#896 // July 3, 1940 // Boise, ID
50th Anniversary of
Idaho Statehood

Old State Capitol,
built between 1905/1912, wings in 1920,
located in downtown Boise, ID
#2439 // January 6, 1990 // Boise, ID
Idaho Statehood

Mountain Bluebird
(Sialia currucoides),
Sawtooth Mountains

#3572 // April 4, 2002
(ex pane of 50 stamps, one for each state)
Greetings from Idaho

Illustration of contemporary postcard
in the style of the 1930s/1940s

View Idaho state quarter
View Idaho state map
View Idaho clock

"Idaho" is an invented word. The meaning is unknown.
Mining lobbyist George Maurice "Doc" Willing (* 1829, † 1874)
presented the name "Idaho" to US Congress in 1860 for a new territory
around Pike's Peak, claiming it was a Shoshone Indian word meaning
"Gem of the Mountains". By the time the deception was discovered,
the name "Idaho" was already in common use.
Land Area
rounded mi2 [km2]
82,747 [214.314]
ranked 11th
(census 2010)
ranked 39th
Population Density
per mi2 [km2] of land area
19 [7]
ranked 45th
The State of Idaho has 44 counties.
Idaho shares in the north on the 49th parallel a 45-mile-long (72 km)
international border with the Canadian province of British Columbia (BC).


// Elmar R. Göller // All rights reserved // Contact // Publishing Information