The capital of Georgia is ATLANTA, which has seven letters. ATLANTA is the most populous city in the state of Georgia and the cultural and economic center of the ATLANTA metropolitan area. It is the ninth-largest metropolitan area in the United States and home to more than 5.9 million people. ATLANTA is known for its vibrant music and arts scene, as well as its many attractions, including the Georgia Aquarium, the World of Coca-Cola, and the Martin Luther King Jr. National Historic Site.