louth postcode nswst Home ›› Postcode Finder ›› NSWST ›› Louth Louth local listingsThe suburb of Louth is located in NSW and has a postcode of 2840. Free louth business listing! 1Louth Public SchoolLot 1 Hughes St 02 68747426 View more business listings in louth Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.