Championship   M. W D L goals
  at home 3 1 1 1 3 : 3
  Away 3 0 2 1 2 : 5
  6 1 3 2 5 : 8
League Cup   M. W D L goals
  at home 2 0 1 1 1 : 4
  Away 1 0 0 1 1 : 2
  3 0 1 2 2 : 6
League One   M. W D L goals
  at home 4 1 1 2 3 : 8
  Away 4 1 1 2 6 : 9
  8 2 2 4 9 : 17
overall   M. W D L goals
  at home 9 2 3 4 7 : 15
  Away 8 1 3 4 9 : 16
  Neutral Place 0 0 0 0 0 : 0
  17 3 6 8 16 : 31
Championship
1966/1967 9. Round Charlton Athletic - Northampton Town 3:0
1966/1967 6. Round Northampton Town - Charlton Athletic 1:1
1964/1965 7. Round Charlton Athletic - Northampton Town 1:1
1964/1965 3. Round Northampton Town - Charlton Athletic 1:0
1963/1964 8. Round Charlton Athletic - Northampton Town 1:1
1963/1964 3. Round Northampton Town - Charlton Athletic 1:2
League Cup
1988/1989 2. Round Charlton Athletic - Northampton Town 2:1
1988/1989 2. Round Northampton Town - Charlton Athletic 1:1
1972/1973 1. Round Northampton Town - Charlton Athletic 0:3
League One
2023/2024 36. Round Northampton Town - Charlton Athletic 1:1 (0:1)
2023/2024 18. Round Charlton Athletic - Northampton Town 2:3 (2:2)
2020/2021 35. Round Charlton Athletic - Northampton Town 2:1 (0:0)
2020/2021 8. Round Northampton Town - Charlton Athletic 0:2 (0:0)
2017/2018 40. Round Northampton Town - Charlton Athletic 0:4 (0:2)
2017/2018 3. Round Charlton Athletic - Northampton Town 4:1 (1:0)
2016/2017 36. Round Northampton Town - Charlton Athletic 2:1 (1:1)
2016/2017 2. Round Charlton Athletic - Northampton Town 1:1 (0:1)

For games that were decided on penalties the score after 120 minutes will be included in the ranking