mannum postcode sa Home ›› Postcode Finder ›› SA ›› Mannum Mannum local listingsThe suburb of Mannum is located in SA and has a postcode of 5238. Free mannum business listing! 1SEO Adelaide by Empower20 Adelaide Road, Mannum SA, Australia 13008154872Mannum Community School49 Walker Ave 08 856915033Kia Marina Houseboat HireRMB 520 A (08) 8569 2400 View more business listings in mannum Search and find other Postcodes in South Australia or widen the search to Postcodes in Australia.