Download Gadm Data Version 36 Work — Trusted & Extended

GADM attribute tables include a GID_0 (country code), GID_1 (state ID), and NAME_1 (state name). Use GID_1 for reliable joins.

Example in QGIS: Layer properties → Joins → Join by field value (GID_1 = your table’s admin ID). download gadm data version 36 work

If GADM 3.6 data is integral to your published work (paper, report, app): GADM attribute tables include a GID_0 (country code),

Some mirrors have removed v3.6. Then use: GID_1 (state ID)