Boise, ID is currently using one area code which is area code 208. Area code 208 covers the entire state of Idaho and was established in 1947.
In addition to Boise, ID area code 208 serves the larger communities of Caldwell, Coeur d'Alene, Idaho Falls, Lewiston, Meridian, Moscow, Mountain Home, Nampa, Pocatello and Twin Falls.
Boise, ID is located in Ada County and observes the Mountain Time Zone. View our Times by Area Code tool.