The season runs from September to April and comprises twenty-two rounds of matches, with each club playing each of its rivals, home and away.

Points are awarded as follows: If teams are level at any stage, tiebreakers are applied in the following order: Pink background are relegation places.

Points are awarded as follows: If teams are level at any stage, tiebreakers are applied in the following order: Due to the COVID-19 pandemic, the 2020–21 season was cancelled.

Points are awarded as follows: If teams are level at any stage, tiebreakers are applied in the following order: Blue background is the play-off place.

Points are awarded as follows: If teams are level at any stage, tiebreakers are applied in the following order: Blue background is the play-off place.

Points are awarded as follows: If teams are level at any stage, tiebreakers are applied in the following order: Blue background is the play-off place.

Points are awarded as follows: If teams are level at any stage, tiebreakers are applied in the following order: Points are awarded as follows: If teams are level at any stage, tiebreakers are applied in the following order: Blue background is the play-off place.

Camborne School of Mines finished second and were due to play Topsham from Devon 1 for the remaining promotion place to the Cornwall/Devon League.

Points are awarded as follows: If teams are level at any stage, tiebreakers are applied in the following order: Blue background is the play-off place.

Camborne School of Mines were due to play Topsham at a venue and date to be decided.

Points are awarded as follows: If teams are level at any stage, tiebreakers are applied in the following order: Blue background is the play-off place.

Liskeard-Looe were unbeaten winning thirteen of their fourteen matches, finished as champions and will next season play in Cornwall/Devon.

The runner-up, Bodmin, beat the second placed team Totnes, from Devon 1 in a play-off for promotion.

Points are awarded as follows: If teams are level at any stage, tiebreakers are applied in the following order: Each season, the runners-up of Cornwall 1 and Devon 1, participate in a play-off for promotion to Cornwall/Devon.

Cornwall 1 was reduced to seven teams playing each other three times to make eighteen games each.

Veor, the runner-up lost to Honiton in the promotion play-off and continued to play in the Tribute Cornwall League.

With an increase from twelve to sixteen teams in the aforementioned league, St Austell and Liskeard-Looe were also promoted.

The two Cornwall leagues amalgamated for the following season and Camborne School of Mines, Illogan Park, Lankelly-Fowey, Redruth Albany, St Agnes, St Day and Veor joined the remaining teams for 2009–10.

The cancellation of National 5 South at the end of the 1995–96 season saw Cornwall League 1 return to being a tier 9 division.