Home Postcodes by state QLD 4737 Postcode 4737 4737 is the postcode for 8 localities in QLD: Armstrong Beach, Blue Mountain, Campwin Beach, Freshwater Point, Sarina, Sarina Beach and 2 more. Localities with postcode 4737Armstrong BeachQLDBlue MountainQLDCampwin BeachQLDFreshwater PointQLDSarinaQLDSarina BeachQLDSarina RangeQLDSunnysideQLD Postcode 4737 State or territory Queensland (QLD) Localities 8 Council area Mackay; Isaac Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 4736 · Postcode 4738