Until 2014, it encompassed the five regions Epirus, Ionian Islands, Western Greece, Central Greece and Peloponnese. Coming into effect in January 2015, the Greek NUTS regions however have been redefined, now encompassing Thessaly instead of Epirus.
- European Commission (18 December 2013). "Commission Regulation (EU) No. 1319/2013 of 9 December 2013". Official Journal of the European Union. Retrieved 9 March 2015.