Barton-upon-Humber currently has 6 mapped postboxes recorded by The Postbox Hunter. The postboxes in Barton-upon-Humber include 3 recorded royal cyphers. The most common is EIIR, recorded on 3 postboxes, representing 50% of the mapped total. The complete recorded cypher list is: EIIR (3), EVIIR (1) and GR (1). Among the recognised royal cyphers in the data, EVIIR is the earliest recorded and EIIR is the most recent. The most commonly recorded postbox type is Pillar, with 2 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.