Home Postcode finder SA Beaufort Beaufort postcode SA Beaufort is a locality in South Australia covered by postcode 5550. Postcode 5550 State or territory South Australia (SA) Region Sa Subs Near 1 Add a free Beaufort business listing Be the first listing in Beaufort Common questionsWhat is the postcode for Beaufort?Beaufort, SA has the postcode 5550.What state is Beaufort in?Beaufort is in South Australia (SA).Does postcode 5550 cover more than one suburb?Yes. Postcode 5550 covers 8 localities, so the postcode alone does not identify Beaufort. Browse other postcodes in South Australia, or widen the search to every Australian postcode.