Version 3.6 was, for a long time, the benchmark for global administrative boundary data, offering improved accuracy in many regions over earlier versions.
Comprehensive Guide: Downloading and Using GADM Data Version 3.6
# List layers in a GeoPackage file ogrinfo gadm36_USA.gpkg download gadm data version 36 work
Finding older versions on data portals can often feel like trying to find a specific book in a library with no card catalog. Thankfully, GADM respects the archivist in all of us.
Top-level subdivisions (States, Provinces, Regions, Governorates). Version 3
ogr2ogr -f OGR_GMT ' ' gadm36_USA.gpkg gadm36_USA_1
Once downloaded, you can import and manipulate GADM data in any modern GIS environment. Working in QGIS Open QGIS and create a new project. Go to . Secondary subdivisions (Counties
Go to: https://gadm.org/download_country_v3.html Note: Do not use the main download button—that defaults to version 4.0+.
The data is organized in two ways: a massive global file or country-by-country.
Secondary subdivisions (Counties, Districts, or Municipalities).