<P> The Metropolitan Atlanta Rapid Transit Authority (MARTA) is the principal rapid transit system in the Atlanta metropolitan area . Formed in 1971 as strictly a bus system, MARTA operates a network of bus routes linked to a rapid transit system consisting of 48 miles (77 km) of rail track with 38 train stations . MARTA operates almost exclusively in Fulton and DeKalb counties, with bus service to two destinations in Cobb county and the Cumberland Transfer Center next to the Cumberland Mall, and a single rail station in Clayton County at Hartsfield - Jackson Atlanta International Airport . MARTA also operates a separate paratransit service for disabled customers . As of 2009, the average total daily ridership for the system (bus and rail) was 482,500 passengers . </P> <P> The state has 151 general hospitals, over 15,000 doctors and almost 6,000 dentists . The state is ranked forty - first in the percentage of residents who engage in regular exercise . </P> <P> Atlanta, located in north - central Georgia at the Eastern Continental Divide, has been Georgia's capital city since 1868 . It is the most populous city in Georgia, with just over 420,000 residents in 2010 . </P> <P> The Atlanta metropolitan area is the cultural and economic center of the Southeast; its population in 2010 was 5,268,860, or 53.6% of Georgia's total . Atlanta is the nation's ninth largest metropolitan area . </P>

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