Home Postcode finder SA Farrell Flat Farrell Flat postcode SA Farrell Flat is a locality in South Australia covered by postcode 5416. Postcode 5416 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Farrell Flat business listing More business listings in Farrell Flat Businesses in Farrell FlatFarrell Flat Primary SchoolLove St · 08 88438064 Common questionsWhat is the postcode for Farrell Flat?Farrell Flat, SA has the postcode 5416.What state is Farrell Flat in?Farrell Flat is in South Australia (SA).Does postcode 5416 cover more than one suburb?Yes. Postcode 5416 covers 2 localities, so the postcode alone does not identify Farrell Flat. Browse other postcodes in South Australia, or widen the search to every Australian postcode.