Alabama Area Geocaching Groups are:
Alabama Geocachers Association = Statewide
ALGA GEO = East Central Alabama & West Central Georgia (Randolph, Chambers, Lee, Cleburne, Heard, Carroll, Troup, Meriwether, Coweta, Harris, etc...)
Coosa Valley Cachers = North East Alabama & North West Georgia (Anniston, Piedmont, Gadsden, Rome, etc...)
AGA - Birmingham Area Cachers = Birmingham
Auburn Opelika Geocachers = Auburn Opelike area
East Alabama Cachers = Phenix City Area and west from there.
Alabama River Region Geocaching = Montgomery Alabama Area
Dixie Cachers
Southern Geocachers Association = Huntsville but not specific to that area.
South Alabama Geocachers = Mobile area
Chattahoochee Valley Geocachers = South East Alabama and South West Georgia (Columbus, GA & Phenix City, AL area plus all surrounding counties.)
There may be others in the area, but I am only aware of these.