The Grand Council of Royal and Select Masters of Idaho was Chartered on 16 May, 1934, by the General Grand Council of Royal and Select Masters of the United States of America.  The original four Councils were:

Idaho Council #1, Boise

Bannock Council #2, Pocatello

King Solomon Council #4, Payette

Menileck Council #5, Gooding

The Grand Council of Cryptic Masons of Idaho now consists of six Councils.