Founded in December 2009, the team played its first and only season the next year in the NASL Conference of the temporary USSF D2 Pro League, the second tier of the American Soccer Pyramid.

With plans to join the new North American Soccer League the following season, the club folded in January 2011 under unmanageable financial strain.

[1] St. Louis played its home games at the Anheuser-Busch Soccer Park in nearby Fenton, Missouri.

The origins of A.C. St. Louis lie in Jeff Cooper's bid to land a Major League Soccer expansion team.

On January 7, 2010, the interim solution was announced to be the new USSF D2 Professional League comprising clubs from both USL and NASL.

On February 11, 2010 the team announced it had entered into an agreement with Nike upon a multi-year apparel and footwear sponsorship.

Source: [10] Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.