laguna postcode nswst Home ›› Postcode Finder ›› NSWST ›› Laguna Laguna local listingsThe suburb of Laguna is located in NSW and has a postcode of 2325. Free laguna business listing! 1Laguna Public SchoolOld Sydney Rd 02 49988251 View more business listings in laguna Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.