Home Postcode finder WA Latham Latham postcode WA Latham is a locality in Western Australia covered by postcode 6616. Postcode 6616 State or territory Western Australia (WA) Region Wa Subs 4 Coast Add a free Latham business listing More business listings in Latham Businesses in LathamLatham Primary School33 Chapple St · 08 99736053 Common questionsWhat is the postcode for Latham?Latham, WA has the postcode 6616.What state is Latham in?Latham is in Western Australia (WA).Does postcode 6616 cover more than one suburb?No. Postcode 6616 covers Latham only, which is unusual - most Australian postcodes cover several localities. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.