The two crossword solutions for the term CITY IN IDAHO are BOISE (5 letters) and MOSCOW (6 letters). Boise is the capital and most populous city of Idaho, located on the Boise River in southwestern Idaho. It is the principal city of the Boise City-Nampa metropolitan area and the largest city between Salt Lake City and Portland. Moscow is a city in northern Idaho, located along the border with Washington. It is the county seat of Latah County and the home of the University of Idaho.