avalon postcode nswbu Home ›› Postcode Finder ›› NSWBU ›› Avalon Avalon local listingsThe suburb of Avalon is located in NSW and has a postcode of 2107. Free avalon business listing! 1TradiepadPO Box 364 (02) 8011 38402KU Avalon Preschool118a Avalon Pde 02 9918 6583 3Maria Regina Primary School42 Central Rd 02 99182608 View more business listings in avalon Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.