Home Postcode finder SA Salisbury Plain Salisbury Plain postcode SA Salisbury Plain is a locality in South Australia covered by postcode 5109. Postcode 5109 State or territory South Australia (SA) Region Sa Subs Near 1 Add a free Salisbury Plain business listing More business listings in Salisbury Plain Businesses in Salisbury PlainAdelaide Fencing4-164 · (08) 8281 9773Adelaide Solar Systems83 Saints Road Cnr Main North Rd · (08) 8281 0001Adwreck3 Boolcunda Avenue, Salisbury Plain SA, Australia · +61870719218 Common questionsWhat is the postcode for Salisbury Plain?Salisbury Plain, SA has the postcode 5109.What state is Salisbury Plain in?Salisbury Plain is in South Australia (SA).Does postcode 5109 cover more than one suburb?Yes. Postcode 5109 covers 6 localities, so the postcode alone does not identify Salisbury Plain. Browse other postcodes in South Australia, or widen the search to every Australian postcode.