Download [upd] Gadm Data Version 36 Work Review

GADM 3.6 boundaries are high-resolution (often >1 MB per province). Use simplification before serving tiles:

While GADM has since released versions 4.0 and 4.1, version 3.6 remains highly relevant. It struck a balance between high spatial resolution and manageable file sizes. Furthermore, it fixed significant identifier errors present in earlier releases (like version 3.4), ensuring that codes such as AFG.1_1 are persistent and reliable for longitudinal studies.

GADM version 3.6 provides several formats to ensure compatibility with different software: Download GADM data (version 3.6) download gadm data version 36 work

Global Administrative Areas (GADM) is a high-resolution database of country administrative boundaries. It maps the administrative areas of all countries, at all levels of sub-division.

Comprehensive Guide to Downloading and Working with GADM Version 3.6 Data GADM 3

Leave a comment or check the official GADM user forum. For automated scripts that download and process GADM 3.6 for multiple countries, see my follow-up post linked below.

If you encounter a problem not covered here, check the gadm36 tag on Stack Overflow or the R-sig-geo mailing list – the user community for v3.6 is still very active. Comprehensive Guide to Downloading and Working with GADM

After downloading, check that your file isn’t corrupted:

: The entire world can be downloaded as a single GeoPackage or Shapefile from the GADM version 3.6 world page .

If you only need boundaries for a specific nation (e.g., Peru or Japan), download the country-specific zip file. This saves bandwidth and processing power.

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 .