Home Postcode finder QLD Somerset Dam Somerset Dam postcode QLD Somerset Dam is a locality in Queensland covered by postcode 4312. Postcode 4312 State or territory Queensland (QLD) Region Western Suburbs Add a free Somerset Dam business listing Be the first listing in Somerset Dam Common questionsWhat is the postcode for Somerset Dam?Somerset Dam, QLD has the postcode 4312.What state is Somerset Dam in?Somerset Dam is in Queensland (QLD).Does postcode 4312 cover more than one suburb?Yes. Postcode 4312 covers 13 localities, so the postcode alone does not identify Somerset Dam. Browse other postcodes in Queensland, or widen the search to every Australian postcode.