Club Heidelberg was founded in St. Catharines, Ontario, in 1952. The club is located at 569 Lake Street, St. Catharines. They later formed a soccer club.
| Season | League |
| 1954 | Southern Ontario Soccer League – Second Division |
| 1954 | Essex County Soccer League |
| 1955 | |
| 1956 | |
| 1957 | |
| 1958 | Southern Ontario Soccer League |
| 1959 | |
| 1960 | Ontario International Soccer League |
| 1961 | Ontario International Soccer League |
| 1962 | Ontario International Soccer League |
| 1963 | Ontario International Soccer League |
| 1964 | Ontario International Soccer League |
| 1965 | |
| 1966 | Ontario Inter-City Soccer League |
| 1967 | Ontario Inter-City Soccer League |
| 1968 | Ontario Inter-City Soccer League |
| 1969 | Ontario Inter-City Soccer League |
| 1970 | Ontario Inter-City Soccer League |
| 1971 | National Soccer League |
| 1972 | National Soccer League |
| 1973 | National Soccer League |
| 1974 | National Soccer League |
| 1975 | National Soccer League |
| 1976 | National Soccer League |
| 1977 | National Soccer League |
| 1978 | National Soccer League |
Before the 1979 season the Heidelberg club was granted a one-year leave of absence from the NSL. However, they never returned to play in the league.