Home Postcode finder SA Lower Inman Valley Lower Inman Valley postcode SA Lower Inman Valley is a locality in South Australia covered by postcode 5211. Postcode 5211 State or territory South Australia (SA) Region Sa Subs Near 2 Add a free Lower Inman Valley business listing Be the first listing in Lower Inman Valley Common questionsWhat is the postcode for Lower Inman Valley?Lower Inman Valley, SA has the postcode 5211.What state is Lower Inman Valley in?Lower Inman Valley is in South Australia (SA).Does postcode 5211 cover more than one suburb?Yes. Postcode 5211 covers 12 localities, so the postcode alone does not identify Lower Inman Valley. Browse other postcodes in South Australia, or widen the search to every Australian postcode.