Chile's administrative areas are called regions, not provinces.

Source: https://www.upu.int/UPU/media/upu/PostalEntitiesFiles/addressingUnit/chlEn.pdf

src/AddressFormat/AddressFormatRepository.php

@@ -301,6 +301,7 @@ protected function getDefinitions(): array
             ],
             'CL' => [
                 'format' => "%givenName %familyName\n%organization\n%addressLine1\n%addressLine2\n%addressLine3\n%postalCode %locality\n%administrativeArea",
+                'administrative_area_type' => 'region',
                 'postal_code_pattern' => '\d{7}',
                 'subdivision_depth' => 2,
             ],