Home Postcode finder SA Penfield Gardens Penfield Gardens postcode SA Penfield Gardens is a locality in South Australia covered by postcode 5121. Postcode 5121 State or territory South Australia (SA) Region Sa Subs Near 1 Add a free Penfield Gardens business listing More business listings in Penfield Gardens Businesses in Penfield GardensPenfield Gardens Rose Nursery126 Short Road, Penfield Gardens SA 5121, Australia · 0472 580 093 Common questionsWhat is the postcode for Penfield Gardens?Penfield Gardens, SA has the postcode 5121.What state is Penfield Gardens in?Penfield Gardens is in South Australia (SA).Does postcode 5121 cover more than one suburb?Yes. Postcode 5121 covers 3 localities, so the postcode alone does not identify Penfield Gardens. Browse other postcodes in South Australia, or widen the search to every Australian postcode.