The League lacked a title sponsor, as the Só Hotel Group did not renew their agreement from the previous season.
[5] Kilkenny United were excluded for a variety of reasons, including that they had not bonded with the local league, they had changed venues for home games, did not train in Kilkenny, lacked a qualified manager, and had produced poor results (just seven points in the last three seasons combined [60 matches]).
[6] Originally scheduled to kick off on 15 March, the season's opening was delayed, initially to late June by the COVID-19 pandemic.
The exact matches were determined by the position of the teams in the league table at the time of the split.
[20] The title-deciding match between Peamount United and Shelbourne on 21 November 2020 was streamed live by the Football Association of Ireland on their FAI TV YouTube channel.