diff --git a/scripts/load_boundaries_postgis.py b/scripts/load_boundaries_postgis.py
index e04e1ced1b..19da732f53 100644
--- a/scripts/load_boundaries_postgis.py
+++ b/scripts/load_boundaries_postgis.py
@@ -328,8 +328,11 @@ def load_cbs_netherlands(conn, geojson_path: Path) -> Dict[str, int]:
         
         for _, row in gdf.iterrows():
             # CBS field names vary - try common patterns
-            gemeente_code = row.get('gemeentecode', row.get('statcode', row.get('GM_CODE', '')))
-            gemeente_name = row.get('gemeentenaam', row.get('statnaam', row.get('GM_NAAM', '')))
+            # Known formats: 'code'/'naam', 'gemeentecode'/'gemeentenaam', 'GM_CODE'/'GM_NAAM'
+            gemeente_code = row.get('code', row.get('gemeentecode', row.get('statcode', row.get('GM_CODE', ''))))
+            gemeente_name = row.get('naam', row.get('gemeentenaam', row.get('statnaam', row.get('GM_NAAM', ''))))
+            provincie_code = row.get('provincieCode', row.get('provincie_code', ''))
+            provincie_naam = row.get('provincieNaam', row.get('provincie_naam', ''))
             
             if not gemeente_name:
                 continue