Killyleagh currently has 6 mapped postboxes recorded by The Postbox Hunter. The postboxes in Killyleagh include 2 recorded royal cyphers. The most common is EIIR, recorded on 3 postboxes, representing 50% of the mapped total. Other recorded cyphers include GVIR. Among the recognised royal cyphers in the data, GVIR is the earliest recorded and EIIR is the most recent. The most commonly recorded postbox type is Lamp, with 3 mapped examples. The data contains 3 different recorded postbox types. Across the available tagging data, 1 colour are represented. The most frequently recorded colour is Red, appearing on 5 mapped postboxes. This information is generated from the latest postbox location and tagging data available to The Postbox Hunter.