Complex sentence: The Shire is governed and administered by the Glenelg Shire Council; the seat of local government and the administrative offices are located at the Council headquarters in Portland, and it also has service centres in Casterton and Heywood.
Split into simpler sentences: The Shire is governed and administered by the Glenelg Shire Council. The seat of local government and the administrative offices are located at the Council headquarters in Portland, and it has service centres in Casterton and Heywood.