Wadalba is a part of Central Coast Region in the state of New South Wales, Australia. The suburb is governed by the local government area of Wyong Shire Council. Around 2,500 people live in Wadalba. The postcode is 2259. The surrounding areas are Warnervale, Hamlyn Terrace, Wyong, Kanwal, Tacoma, Tuggerawong and Wyongah. Wadalba is located 107 klometres north of Sydney, 44 kilometres north of Wyong and 59 kilometres south of Newcastle.