1934
Southern Tasmanian District Football Association (STDFA)
Referred to as the SDFA, this Association blended rural and suburban teams that formed a strong and vibrant competition over the years.
It had a club membership of the following: Australian Newsprint Mills, Bagdad-Mangalore, Bellerive, Bothwell, Bridgewater, Brighton, Clarence, Forcett, Glenorchy Rovers, Hamilton, Mangalore, Maydena, Maydena-Westerway, Montrose, New Norfolk, Ouse, Ouse-Wayatinah, Richmond and South Hobart.
The first premiership in 1934 was won by Glenorchy Rovers 13.5 (83) over New Norfolk 4.9 (33) and the last premiership played in 1970 saw Bothwell 11.6 (72) defeat Upper-Derwent 7.8 (50).
The competition was suspended between 1941 and 1944 as a consequence of WW11.
On resumption in 1945, the 1st post war premiership was won by New Norfolk when it easily accounted for Clarence, by scoring 12.12 (84) to 1.5 (11).
The STDFA became defunct at the end of 1970.
1986
TFL State Wide League (TSWL)
In 1986 the TANFL had created a State wide competition. Member clubs were the existing six Southern, Clarence, Glenorchy, Hobart, New Norfolk, North Hobart and Sandy Bay. Two clubs from the NTFA namely, North Launceston and South Launceston joined to form an 8 team competition
2000
AFL Tasmania
At the conclusion of 2000 Football Tasmania was absorbed by AFL Tasmania, the new controlling body of football in Tasmania. It immediately ceased the State Wide League competition to focus on a Tasmanian team in the VFL. This move forced the former State Wide League clubs to return to their respective regional competitions.
2001
State Wide League collapse
With the demise of the State Wide League collapse, the original Southern based club, Clarence, Glenorchy and North Hobart had no option, but to join the SFL in 2001.
2002
SFL: two tiered competition
In 2002 the SFL created a two tiered competition (i) Premier League, made-up from former State Wide League Clubs, Clarence, Glenorchy Storm, North Hobart, Hobart, New Norfolk, Kingston, Brighton and Sorell. (ii) Regional League, included the original clubs Channel, Claremont, Cygnet, Huonville Lions, Kermandie, Lauderdale and Lindisfarne.
2009
SFL restructure
Southern Football League resumed its original (1996-1997) competition following the exit of clubs to the newly formed AFL Tasmania Tasmanian State League to commence in 2009. Clubs that left the SFL were: Clarence, Glenorchy, Hobart, Lauderdale and North Hobart.