Home Postcodes by state WA 6436 Postcode 6436 6436 is the postcode for 2 localities in WA: Menzies and Ularring. Localities with postcode 6436MenziesWAUlarringWA Postcode 6436 State or territory Western Australia (WA) Localities 2 Council area Menzies Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 6434 · Postcode 6437