The EPP/CoR Group has approximately 125 full members and 115 alternate members, which include Presidents of Regional governments, Presidents and Members of regional councils, Mayors and Members of municipal councils from 28 Member States of the European Union.

CoR Members have to hold either a regional or local authority electoral mandate or be politically accountable to an elected assembly (according to the Lisbon Treaty). Member States’ national governments propose representatives to the Council of Ministers, which officially appoints them for a renewable a five year mandate.