Henry County is a county located in the U.S. state of Georgia. As of the 2010 census, the county's population was 203,922. The county seat is McDonough. The county was named for Patrick Henry, Revolutionary War firebrand and champion of individual rights, to whom the slogan "give me liberty, or give me death" is attributed.
Henry County is part of the Atlanta-Sandy Springs-Roswell, GA Metropolitan Statistical Area. It is home to the Atlanta Motor Speedway in Hampton. The Henry County Courthouse (McDonough, Georgia) is listed on the National Register of Historic Places. It has been the 10th-fastest growing county in the nation.
Henry County, Georgia was created by the Georgia State Legislature in 1821 from land acquired from the Creek Indian Nation by the First Treaty of Indian Springs. Henry's original land area was much larger than it is today, stretching from near Indian Springs (present-day Indian Springs State Park) in the south to the Chattahoochee River near Sandy Springs in the north; encompassing most of present day Metropolitan Atlanta. Before one year passed the size of the County was diminished through the separation of land areas which, in whole or in part, became present day DeKalb, Fulton, Fayette and Newton Counties. Later divisions resulted in Clayton, Spalding, Rockdale and Butts Counties.
In the beginning Henry County was a virgin wilderness, having just been ceded from the Creek Nation. Prior to 1821, the Creeks and a few trappers and traders were the only residents of this area. The Creek Indians left their mark through place names, a few small Indian Mounds scattered around the County and through the arrowheads and broken pottery which can be found throughout Henry County.
Jesse Johnson, son of John Johnson and great-grandfather of U.S. President Lyndon Baines Johnson, was a "first settler" of Henry County. He was a prosperous farmer, sheriff (1822–1835), and judge, before he fled to Alabama.