The first matches of the season were played in August 2016, and the season ended in June 2017 with the promotion play-off finals.
80 teams will join the league, including four relegated from the 2015–16 Segunda División and 18 promoted from the 2015–16 Tercera División.
The composition of the groups is a proposal of the Royal Spanish Football Federation that was confirmed on 15 July 2016.
This is a list of attendance data of the teams that give an official number.
They include playoffs games: Notes: 1: Team played last season in Segunda División.