During the period of its existence, it was the lowest national division of the Greek championship.

Many historical clubs of first division (Super League) have played in Delta Ethniki, such as Iraklis (2011–12 season), Ethnikos Piraeus, Apollon Smyrnis and Atromitos.

The clubs of Delta Ethniki were divided in groups on the basis of geographical criteria.

[4] ^a That year the champions clubs played play-off games so as to promote to the third division.

The scores were: Ilisiakos - Chalkida 2–1, Doxa Drama - Averof Ioannina 5–2, Pierikos - Rodos 0–2, Pontiakos Nea Santa - Thyella Patra 2–4, Veria - Atsalenios 2–1[5]