Fort Hall, ID

ZIP code 83203 encompasses the city of Arco, Idaho. Known as the first city in the world to be lit by nuclear power, Arco is home to the Experimental Breeder Reactor-1, a National Historic Landmark. The area also features the Lost Rivers Museum, which showcases the history of the region's early settlers and the agriculture industry. With stunning views of the surrounding mountains, ZIP code 83203 provides a unique blend of history and natural beauty.