Opening hours of Post Office in Mullalyup, Western Australia Opening hours of Post Office in Mullalyup, Western Australia Home / Western Australia / Mullalyup / Post Office Post Office Australia Post 21003 South Western Highway, Mullalyup, Western Australia 6252 +61 8 9764 1400 Categories of local businesses in Mullalyup Art Gallery Arts & Entertainment Bus and coach company Bus charter Bus company Cemetery Establishment Finance Health Home & Gardens Lodging Post Office Tour operator Travel & Accommodation