Idaho is a state in the Rocky Mountain area of the United States. The state's largest city and capital is Boise
Boise, Idaho
Boise is the capital and most populous city of the U.S. state of Idaho, as well as the county seat of Ada County. Located on the Boise River, it anchors the Boise City-Nampa metropolitan area and is the largest city between Salt Lake City, Utah and Portland, Oregon.As of the 2010 Census Bureau,...

. Residents are called "Idahoans". Idaho was admitted to the Union
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 on July 3, 1890, as the 43rd state.

Idaho is a mountainous state, and is the 14th largest state by land area, with an area larger than that of all of New England
New England
New England is a region in the northeastern corner of the United States consisting of the six states of Maine, New Hampshire, Vermont, Massachusetts, Rhode Island, and Connecticut...