The ArcGIS Data Appliance 2026 update of ArcGIS Data Appliance: World Gazetteer includes 2025 open-source content from GeoNames. There are more than 25 million geographical names and more than 16 million alternate names in this update. It can be downloaded from My Esri or shipped separately on a USB flash drive with most product options.
Note:
World Gazetteer is not included with the World Basic product option.