1km Grid Square in GIS format Download 1km Grid Square digital boundaries in ESRI Shapefile, GeoJSON, and Geodatabase formats. Date published: 14 December 2023 Research and support: Geography, Grid Square products Download 100m Grid Square digital boundariesDownload Combined Grid Square digital boundaries Documents ESRI Shapefile ZIP archive (328 KB) GeoJSON ZIP archive (626 KB) Geodatabase (contains 1km, 100m and Combined grid layers) ZIP archive (29 MB) Help viewing documents