[2] Celje were the defending champions, having won their first title in the previous season.
Mura won their first title after defeating Maribor in the final round.
Rudar Velenje and Triglav Kranj were relegated at the end of the previous season.
[5] Seating capacity only; some stadiums also have standing areas.
The winner earned a place in the 2021–22 PrvaLiga season.