Some of the cities, towns, and places in Canyon County are Bowmont, Caldwell, Greenleaf, Huston, Melba, Middleton, Nampa, Notus, Parma, Riverside, Roswell, Star, Sunnyslope, Wilder
Canyon County is located in the U.S. state of Idaho. As of the 2010 census, the population was 188,923, making it the second-most populous county in Idaho. The county seat is Caldwell, and its largest city is Nampa.
Canyon County is part of the Boise Metropolitan Statistical Area.