FC Idar was a moderately successful amateur side in the years leading up to and following World War II, playing in the highest level regional amateur league through the 20s and into the early 30s, the Kreisliga Saar, later the Bezirksliga Rhein-Saar, and then, for a season, the Gauliga Mittelrhein.

In 1938 a trio of FC players joined Hannover 96 and helped that club win the national championship.

Despite the 1971 merger, newly formed SC performed poorly through the rest of the decade and on into the late 80s.

They also won their way to the third division Regionalliga West/Südwest that year, but were overmatched and quickly relegated, dropping as far down as the Verbandsliga Südwest again by 2005.

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