Home Postcodes by state WA Capricorn Capricorn postcode WA Capricorn is a locality in Western Australia covered by postcode 6642. Postcode 6642 State or territory Western Australia (WA) Region North West Suburbs Council area Meekatharra Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Add a free Capricorn business listing Be the first listing in Capricorn Also in postcode 6642Angelo RiverWA 6642KumarinaWA 6642MeekatharraWA 6642Peak HillWA 6642 Common questionsWhat is the postcode for Capricorn?Capricorn, WA has the postcode 6642.What state is Capricorn in?Capricorn is in Western Australia (WA).What council is Capricorn in?Capricorn is in the Meekatharra local government area.Does postcode 6642 cover more than one suburb?Yes. Postcode 6642 covers 5 localities, so the postcode alone does not identify Capricorn. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.