Georgia is a state located in the southeastern United States. Georgia was established in 1732, the last of the original Thirteen Colonies. Georgia was the fourth state to ratify the United States Constitution, on January 2, 1788. It declared its secession from the Union on January 21, 1861, and was one of the original seven Confederate states. It was the last state to be restored to the Union, on July 15, 1870. With an estimated 9,829,211 residents as of July 1, 2009, Georgia is the ninth most populous state. From 2007 to 2008, 14 of Georgia's counties ranked among the nation's 100 fastest-growing, second only to Texas. Georgia is known as the Peach State and the Empire State of the South. Atlanta is the capital and the most populous city.