The 2015 Saint Louis FC season was the franchise's first season in the United Soccer League, the third division of soccer in the United States.

The club was affiliated with the Chicago Fire of Major League Soccer that season.

[1] Where a player has not declared an international allegiance, nation is determined by place of birth.

Source: Match reports Supplier: Nike[22] / Sponsor: Electrical Connection, NECA/IBEW Local 1[22]