A league champion is determined at the end of each season.
Champions have been determined by postseason playoffs, winning the regular season pennant, or being declared champion by the league office.
Then, the North and South division winners played a best-of-five series to determine a league champion.
[1] Since 1979, the winner of the League Championship Series has become the holder—until the following season's championship—of the Watson Spoelstra Florida State League Championship Trophy.
[3] Active Florida State League teams appear in bold.