Southern District

Southern District entered the newly formed Hong Kong Third District Division during the 2002–03 season. However, the team did not reach the Hong Kong Third Division League final round and thus did not get promotion in the first few years of their history.

In the 2006–07 season, they reached the final round for the first time since the club was formed. They were the runners up of the Third District Division and qualified for the final round, however, they could not get promotion as they only managed to gain two points.

In the 2007–08 season, they retained last season's good performance, reached the final round again as they were again the 1st runner-up of Third District Division League, 9 points behind Shatin. Unfortunately, they could not gain the promotion again as they were 4 points behind the promotion places.

In the 2008–09 season, they could not qualify for the final round as they only placed at 4th of Third District Division.

They were finally promoted to the Hong Kong Second Division for the first time in the 2009–10 season. They were the 1st runner-up of the Third District Division League and competed with the other 3 teams in the final round for promotion. Although they only placed at 3rd in the final round, Eastern decided not to accept promotion and the right to be promoted was passed to Southern who did accept.

They successfully avoided relegation and stayed in the Second Division during their first season. They were the 4th out of 12 teams, 10 points behind the champions Sham Shui Po. On the other hand, they won their first trophy since their formation on 9 January 2011. They defeated Double Flower in the final of Hong Kong Junior Shield at Hong Kong Stadium.

They were promoted to the Hong Kong First Division for the first time in the 2011–12 season, as they were the 1st runner-up of the Hong Kong Second Division, three points behind champions Rangers.

They were branded as Royal Southern in the 2013–14 season, and finished 4th out of 12 teams. However, the club chose to self-relegate after the end of the season.

They returned to the top flight in the 2015–16 season. Starting from this season, the club was rebranded as Kwoon Chung Southern due to sponsorship reasons.

In 2016–17, Southern finished third in the table, their highest position in club history.

Southern matched their table position from 2016 to 2017 with another third-place finish in 2018–19. The club also reached the finals of Hong Kong FA Cup for the first time, losing 2–0 to Kitchee.

The club claimed their first silverware in the form of the 2022–23 Sapling Cup with a 2–0 win over Lee Man aided by a brace by Stefan Pereira.