| Season | Level | Division | Section | Administration | Position | Movements |
| 1956 | Tier 4 | Aluesarja (Area Series) | Group 11 - Oulu | Finnish FA (Suomen Palloliitto) | 4th | |
| 1957 | Tier 4 | Aluesarja (Area Series) | Group 17 - Oulu | Finnish FA (Suomen Palloliitto) | 3rd | |
| 1958 | Tier 4 | Aluesarja (Area Series) | Group 16 - Oulu | Finnish FA (Suomen Palloliitto) | 1st | Promoted |
| 1959 | Tier 3 | Maakuntasarja (Regional League) | Group 9 | Finnish FA (Suomen Palloliitto) | 5th | |
| 1960 | Tier 3 | Maakuntasarja (Regional League) | Group 9 | Finnish FA (Suomen Palloliitto) | 6th | |
| 1961 | Tier 3 | Maakuntasarja (Regional League) | Group 9 | Finnish FA (Suomen Palloliitto) | 8th | Relegated |
| 1962 | Tier 4 | Aluesarja (Area Series) | Group 17 - Oulu | Finnish FA (Suomen Palloliitto) | 1st | Promoted |
| 1963 | Tier 3 | Maakuntasarja (Regional League) | Group 9 | Finnish FA (Suomen Palloliitto) | 8th | Relegated |
| 1964 | Tier 4 | Aluesarja (Area Series) | Group 17 - Oulu | Finnish FA (Suomen Palloliitto) | 2nd | |
| 1965 | Tier 4 | Aluesarja (Area Series) | Group 17 - Oulu | Finnish FA (Suomen Palloliitto) | 2nd | |
| 1966 | Tier 4 | Aluesarja (Area Series) | Group 17 - Oulu | Finnish FA (Suomen Palloliitto) | 4th | |
| 1967 | Tier 4 | Aluesarja (Area Series) | Group 17 - Oulu | Finnish FA (Suomen Palloliitto) | 3rd | |
| 1968 | Tier 4 | Aluesarja (Area Series) | Group 16 - Oulu | Finnish FA (Suomen Palloliitto) | 4th | |
| 1969 | Tier 4 | Aluesarja (Area Series) | Group 16 - Oulu | Finnish FA (Suomen Palloliitto) | 2nd | |
| 1970 | Tier 4 | 4. divisioona (Fourth Division) | Group 17 - Oulu | Finnish FA (Suomen Palloliitto) | 2nd | Merger with Oulun Pallo-Veikot |
| 1971 | Tier 3 | 3. divisioona (Third Division) | Group 7 | Finnish FA (Suomen Palloliitto) | 4th | as OLS-Veikot |
| 1972 | Tier 3 | 3. divisioona (Third Division) | Group 9 | Finnish FA (Suomen Palloliitto) | 1st | OLS-Veikot - Promoted |
| 1973 | Tier 3 | 2. divisioona (Second Division) | North Group | Finnish FA (Suomen Palloliitto) | 8th | OLS-Veikot |
| 1974 | Tier 3 | 2. divisioona (Second Division) | North Group | Finnish FA (Suomen Palloliitto) | 9th | OLS-Veikot |
| 1975 | Tier 3 | 2. divisioona (Second Division) | North Group | Finnish FA (Suomen Palloliitto) | 8th | |
| 1976 | Tier 3 | 2. divisioona (Second Division) | North Group | Finnish FA (Suomen Palloliitto) | 3rd | |
| 1977 | Tier 3 | 2. divisioona (Second Division) | North Group | Finnish FA (Suomen Palloliitto) | 1st | Promoted |
| 1978 | Tier 2 | 1. divisioona (First Division) | | Finnish FA (Suomen Palloliitto) | 12th | Relegated |
| 1979 | Tier 3 | 2. divisioona (Second Division) | North Group | Finnish FA (Suomen Palloliitto) | 6th | |
| 1980 | Tier 3 | 2. divisioona (Second Division) | North Group | Finnish FA (Suomen Palloliitto) | 10th | Relegated |
| 1981 | Tier 4 | 3. divisioona (Third Division) | Group 9 | Finnish FA (Suomen Palloliitto) | 6th | |
| 1982 | Tier 4 | 3. divisioona (Third Division) | Group 9 | Finnish FA (Suomen Palloliitto) | 6th | |
| 1983 | Tier 4 | 3. divisioona (Third Division) | Group 9 | Finnish FA (Suomen Palloliitto) | 2nd | Promotion Playoff |
| 1984 | Tier 4 | 3. divisioona (Third Division) | Group 9 | Finnish FA (Suomen Palloliitto) | 7th | |
| 1985 | Tier 4 | 3. divisioona (Third Division) | Group 9 | Finnish FA (Suomen Palloliitto) | 3rd | |
| 1986 | Tier 4 | 3. divisioona (Third Division) | Group 9 | Finnish FA (Suomen Palloliitto) | 2nd | |
| 1987 | Tier 4 | 3. divisioona (Third Division) | Group 9 | Finnish FA (Suomen Palloliitto) | 1st | Promoted |
| 1988 | Tier 3 | 2. divisioona (Second Division) | North Group | Finnish FA (Suomen Palloliitto) | 2nd | |
| 1989 | Tier 3 | 2. divisioona (Second Division) | North Group | Finnish FA (Suomen Palloliitto) | 4th | |
| 1990 | Tier 3 | 2. divisioona (Second Division) | North Group | Finnish FA (Suomen Palloliitto) | 1st | FC OLS - Promoted |
| 1991 | Tier 2 | 1. divisioona (First Division) | | Finnish FA (Suomen Palloliitto) | 9th | Merged with Oulun Työväen Palloilijat to FC Oulu |
| 1992-1995 | | | | | | No first team football |
| 1996 | Tier 3 | Kakkonen (Second Division) | North Group | Finnish FA (Suomen Palloliitto) | 10th | As OPP due to FA naming regulations - Relegated |
| 1997 | Tier 3 | Kakkonen (Second Division) | North Group | Finnish FA (Suomen Palloliitto) | 8th | Took place of OPS |
| 1998 | Tier 3 | Kakkonen (Second Division) | North Group | Finnish FA (Suomen Palloliitto) | 6th | As OPS due to FA naming regulation |
| 1999 | Tier 3 | Kakkonen (Second Division) | North Group | Finnish FA (Suomen Palloliitto) | 2nd | Promotion Playoff |
| 2000 | Tier 3 | Kakkonen (Second Division) | North Group | Finnish FA (Suomen Palloliitto) | 5th | |
| 2001 | Tier 3 | Kakkonen (Second Division) | North Group | Finnish FA (Suomen Palloliitto) | 9th | |
| 2002 | Tier 3 | Kakkonen (Second Division) | North Group | Finnish FA (Suomen Palloliitto) | 1st | Promotion Playoff - Promoted |
| 2003 | Tier 2 | Ykkönen (First Division) | | Finnish FA (Suomen Palloliitto) | 13th | Relegated |
| 2004 | Tier 3 | Kakkonen (Second Division) | Northern Group | Finnish FA (Suomen Palloliitto) | 2nd | Promotion Playoff - Lost but Promoted due to bankruptcy of FC Jazz |
| 2005 | Tier 2 | Ykkönen (First Division) | | Finnish FA (Suomen Palloliitto) | 13th | Relegated |
| 2006 | Tier 3 | Kakkonen (Second Division) | Group C | Finnish FA (Suomen Palloliitto) | 4th | |
| 2007 | Tier 3 | Kakkonen (Second Division) | Group C | Finnish FA (Suomen Palloliitto) | 7th | |
| 2008 | Tier 3 | Kakkonen (Second Division) | Group C | Finnish FA (Suomen Palloliitto) | 9th | |
| 2009 | Tier 3 | Kakkonen (Second Division) | Group C | Finnish FA (Suomen Palloliitto) | 12th | Relegated |
| 2010-2012 | | | | | | No first team football |
| 2013 | Tier 4 | Kolmonen (Third Division) | Northern Finland | Finnish FA (Suomen Palloliitto) | 1st | Promoted |
| 2014 | Tier 3 | Kakkonen (Second Division) | Northern Group | Finnish FA (Suomen Palloliitto) | 10th | Relegated |
| 2015 | Tier 4 | Kolmonen (Third Division) | Northern Finland | Finnish FA (Suomen Palloliitto) | 4th | |
| 2016 | Tier 4 | Kolmonen (Third Division) | Northern Finland | Finnish FA (Suomen Palloliitto) | 3rd | |
| 2017 | Tier 4 | Kolmonen (Third Division) | Northern Finland | Finnish FA (Suomen Palloliitto) | 1st | Promoted |
| 2018 | Tier 3 | Kakkonen (Second Division) | Group c | Finnish FA (Suomen Palloliitto) | 8th | |
| 2019 | Tier 3 | Kakkonen (Second Division) | Group c | Finnish FA (Suomen Palloliitto) | 7th | |
| 2020 | Tier 3 | Kakkonen (Second Division) | Group c | Finnish FA (Suomen Palloliitto) | 11th | Remained due to bankruptcy of AC Kajaani |
| 2021 | Tier 3 | Kakkonen (Second Division) | Group A | Finnish FA (Suomen Palloliitto) | 8th | |
| 2022 | Tier 3 | Kakkonen (Second Division) | Group C | Finnish FA (Suomen Palloliitto) | 4th | |
| 2023 | Tier 3 | Kakkonen (Second Division) | Group C | Finnish FA (Suomen Palloliitto) | 1st | Promotion playoff to Ykkösliiga - Promoted to Ykkönen |
| 2024 | Tier 3 | Ykkönen (First Division) | | Finnish FA (Suomen Palloliitto) | 3rd | |
| 2025 | Tier 3 | Ykkönen (First Division) | | Finnish FA (Suomen Palloliitto) | | |