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Philadelphia Lone Star F.C. was established in 2001 under the name of Junior Lone Star Football Club by a group of Liberian American immigrant soccer players. The club was named Junior Lone Star FC, after the Liberian national football team, because most of the team's players were from Liberia at that time.

In 2001, the club had a single team with 11 players but the club has grown over the years with the addition of three teams with over 70 players. In 2012, the First Team will be participating in the National Premier Soccer League; the Reserve Team (U-23) will be participating in the US Club Soccer National Adult League; and the Junior Team (U-19/20) will be participating in the USL Super-20 League.

Junior Lone Star FC won its first major championship in 2008 when the club's U-23 team won the Eastern Pennsylvania State U23 Cup. The club's U23s then represented Eastern Pennsylvania in the 2008 USASA Region I Men's U-23 Cup where they defeated West Chester United SC and FC Delco in the semi-finals and final, respectively. The club's U23s subsequently represented USASA Region I at the 2008 USASA National Men's U-23 Championship where they lost to eventual champions Ela Elite in the semi-finals.

Junior Lone Star FC is affiliated with the United States Youth Soccer Association (USYSA), the United States Adult Soccer Association (USASA) and the US Club Soccer (USCS).