From its county population in 2000 of 92703 to its current population estimate of 138776, the county has experienced a growth change of 46073.
Douglas County was formed in from parts of Carroll and old Campbell counties plus a small section of the original Cherokee County.
The county was named after Stephen A. Douglas, a U.S. Congressman and rival of Abraham Lincoln for the presidency. Douglasville, the county seat, was named after the county in 1875.
The area around Douglas County was settled in 1848 by Abe, Reuben and Young Vansant, two brothers from South Carolina.
Around the turn of the century, Lithia Springs was the site of a prestigious resort hotel for the nation's rich and famous. Visitors were attracted to the therapeutic mineral waters of Lithia Springs until fire destroyed the hotel in 1911.
Ceremonial mounds of the Mississippian Indians are located in the county. Other Indian artifacts and remains, such as pottery, tools, and weapons, can be found within Douglas County.