Founded in late 2015, St George City was created with the aim of providing a new way for players aged 13 to 16 to progress into senior football from their SAP program.

[1] At the start of 2016, St George City was set to play in NSW State League under former NSL player, Manny Spanoudakis.

[6] They also signed former A-League Men player Corey Gameiro and Nick Sullivan to their squad who both departed by the end of the season.

It wasn't until 2022, when St George City finally earned promotion to NPL NSW Men's division after coming runners-up and beating premiership winners, Central Coast Mariners Academy, 2-1, in extra time after a late goal from Damian German to win them the championship.

After its establishment in 2016, St George City primarily played in Peter Moore Field in Bankstown during the 2016 season in NSW State league.