penong postcode sa Home ›› Postcode Finder ›› SA ›› Penong Penong local listingsThe suburb of Penong is located in SA and has a postcode of 5690. Free penong business listing! 1Penong Primary School 08 86251017 View more business listings in penong Search and find other Postcodes in South Australia or widen the search to Postcodes in Australia.