Home Postcode finder NSW Lawson Lawson postcode NSW Lawson is a locality in New South Wales covered by postcode 2783. Postcode 2783 State or territory New South Wales (NSW) Region Nepean Add a free Lawson business listing More business listings in Lawson Businesses in LawsonLawson Public School1 Wilson St · 02 47591196Micah & CoUnit 3 · 02 4759 1953Our Lady of the Nativity Primary School7 Somers St · 02 47591787 Common questionsWhat is the postcode for Lawson?Lawson, NSW has the postcode 2783.What state is Lawson in?Lawson is in New South Wales (NSW).Does postcode 2783 cover more than one suburb?No. Postcode 2783 covers Lawson only, which is unusual - most Australian postcodes cover several localities. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.