The Ashton Council was founded in Ashton, Idaho in 1917.
It closed in 1918.

The Rupert Council was founded in Rupert, Idaho in 1922.
It closed in 1924.

The Boise Council (#105) was founded in 1919, and changed its name in 1927 to the Boise Area Council (#105).
In 1951 the council changed its name to the Mountainview Council (#105).
In 1968 the council merged with the Ore-Ida Council (#106).

The Western Idaho Council (#106) was founded in 1927, and changed its name in 1929 to the Oregon-Idaho Area Council (#106).
In 1933 the council changed its name to the Ore-Ida Council (#106).
On January 30, 2020 the council merged with Snake River Council (#111) and formed Mountain West Council.

The Bonner-Boundary Council (#106) merged with the Inland Northwest Council.

The Idaho Falls Council (#107) was founded in 1922, and changed its name in 1925 to the Teton Peaks Council (#107).
In 1993, the council merged with the Tendoy Area Council (#109) to become Grand Teton Council (#107).

The Nez Perce County Council (#108) was founded in 1919 and changed its name in 1922 to the Lewiston Council (#108).
It changed its name in 1925 to the Lewis-Clark Area Council (#108).
In 1928 the council changed its name to the Lewis-Clark Council (#108).
The council merged with the Inland Northwest Council (#661) in 1992.

The Pocatello Council (#109) was founded in 1919, and changed its name in 1925 to the Eastern Idaho Council (#109).
It changed its name in 1934 to the Tendoy Area Council (#109).
In 1993, the council merged with the Teton Peaks Council to become Grand Teton Council (#107).

The Shoshone County Council (#110) was founded in 1918, and changed its name in 1923 to the Shoshone-Kooteni Council (#110).
In 1928 the council changed its name to the Idaho Panhandle Council (#110).
The council merged with the Inland Northwest Council (#661) in 1992.

The Twin Falls Council (#111) was founded in 1922, and changed its name in 1924 to the Snake River Area Council (#111).
It changed its name in 1993 to the Snake River Council (#111).
On January 30, 2020 the council merged with Ore-Ida Council (#106) and formed Mountain West Council.

The Mountain West Council (#106) was formed in 2020, with the merging of Ore-Ida Council (#106) and Snake River Council (#111) on January 30, 2020.
The Ashton Council was founded in Ashton, Idaho in 1917. It closed in 1918.
The Rupert Council was founded in Rupert, Idaho in 1922. It closed in 1924.
The Boise Council (#105) was founded in 1919, and changed its name in 1927 to the Boise Area Council (#105). In 1951 the council changed its name to the Mountainview Council (#105). In 1968 the council merged with the Ore-Ida Council (#106).
The Western Idaho Council (#106) was founded in 1927, and changed its name in 1929 to the Oregon-Idaho Area Council (#106). In 1933 the council changed its name to the Ore-Ida Council (#106). On January 30, 2020 the council merged with Snake River Council (#111) and formed Mountain West Council.
The Bonner-Boundary Council (#106) merged with the Inland Northwest Council.
The Idaho Falls Council (#107) was founded in 1922, and changed its name in 1925 to the Teton Peaks Council (#107). In 1993, the council merged with the Tendoy Area Council (#109) to become Grand Teton Council (#107).
The Nez Perce County Council (#108) was founded in 1919 and changed its name in 1922 to the Lewiston Council (#108). It changed its name in 1925 to the Lewis-Clark Area Council (#108). In 1928 the council changed its name to the Lewis-Clark Council (#108). The council merged with the Inland Northwest Council (#661) in 1992.
The Pocatello Council (#109) was founded in 1919, and changed its name in 1925 to the Eastern Idaho Council (#109). It changed its name in 1934 to the Tendoy Area Council (#109). In 1993, the council merged with the Teton Peaks Council to become Grand Teton Council (#107).
The Shoshone County Council (#110) was founded in 1918, and changed its name in 1923 to the Shoshone-Kooteni Council (#110). In 1928 the council changed its name to the Idaho Panhandle Council (#110). The council merged with the Inland Northwest Council (#661) in 1992.
The Twin Falls Council (#111) was founded in 1922, and changed its name in 1924 to the Snake River Area Council (#111). It changed its name in 1993 to the Snake River Council (#111). On January 30, 2020 the council merged with Ore-Ida Council (#106) and formed Mountain West Council.
The Mountain West Council (#106) was formed in 2020, with the merging of Ore-Ida Council (#106) and Snake River Council (#111) on January 30, 2020.
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