Trimley St Mary currently has 7 mapped postboxes recorded by The Postbox Hunter. The postboxes in Trimley St Mary include 2 recorded royal cyphers. The most common is EIIR, recorded on 2 postboxes, representing 28.6% of the mapped total. The complete recorded cypher list is: EIIR (2) and GR (1). The most commonly recorded postbox type is Lamp, with 4 mapped examples. The data contains 3 different recorded postbox types. Across the available tagging data, 2 designs are represented. This information is generated from the latest postbox location and tagging data available to The Postbox Hunter.