Happy Birthday Idaho. Idaho became the 43rd state July 3, 1890. The Great Seal of Idaho was designed in 1890 by Emma Green. It is the only Great Seal in the 50 states to be designed by a woman. In Boise, residents may not fish from a giraffe's back, and it's against the law for anyone over the age of 88 to ride a motorcycle. They love teddy bears in Idaho. Do you know anyone who lives in Idaho?