[2] The official proportions of the flag, 26:33, are unique in the world, although many reproductions use more common ratios like 2:3 The seal depicts a miner and a woman representing equality, liberty and justice.

The symbols on the seal represent some of Idaho's natural resources: mines, forests, farmland and wildlife.

The pine tree in the foreground refers to Idaho's immense timber interests.

In 1957, the seal was slightly redrawn by Paul B. Evans and the Caxton Printers, Ltd. at the request of the state government, in order to add more anthropocentric elements to the centered shield.

[4] In 2001, the North American Vexillological Association surveyed its members on the designs of all 72 Canadian provincial, U.S. state and U.S. territorial flags, combined.