Home Postcode finder SA Brownlow Brownlow postcode SA Brownlow is a locality in South Australia covered by postcode 5374. Postcode 5374 State or territory South Australia (SA) Region Sa Subs Near 1 Add a free Brownlow business listing Be the first listing in Brownlow Common questionsWhat is the postcode for Brownlow?Brownlow, SA has the postcode 5374.What state is Brownlow in?Brownlow is in South Australia (SA).Does postcode 5374 cover more than one suburb?Yes. Postcode 5374 covers 15 localities, so the postcode alone does not identify Brownlow. Browse other postcodes in South Australia, or widen the search to every Australian postcode.