Alabama entered the union as the twenty-second (22nd) state on December
14, 1819. Prior to that time, this area was part of the Mississippi
Territory and Indian lands. Its earliest counties -- Washington, Madison,
Baldwin, Clarke, Mobile, Monroe, and Montgomery -- were formed from
the Mississippi Territory.
The first census to enumerate the state of Alabama was in 1820. State
Censuses began in 1820 - counties of Baldwin, Conecuh, Dallas, Franklin,
Limestone, St. Clair, Shelby, and Wilcox; in 1850 - all counties in
1855 - counties of Autauga, Baldwin, Blount, Coffee, Franklin, Henry,
Lowndes, Macon, Mobile, Pickens, Tallapoosa, Tuscaloosa and in 1866
- all counties.