marden postcode sa Home ›› Postcode Finder ›› SA ›› Marden Marden local listingsThe suburb of Marden is located in SA and has a postcode of 5070. Free marden business listing! 1Marden Secondary College1-37 Marden Rd 08 836628882Open Access College1-37 Marden Rd 08 830935003Eastern Building GroupPayneham Rd, Marden SA, Australia (08) 8363 3331 View more business listings in marden Search and find other Postcodes in South Australia or widen the search to Postcodes in Australia.