The following countries support administrative divisions at the first level (states, provinces, prefectures, etc.) via Overture Maps / Natural Earth data. Matching is done through ISO 3166-2 codes and region names.
| Country | Level Name | Local Name | Count | Code Example | Name Example |
|---|---|---|---|---|---|
| Brazil | State | Estados | 27 | BR-SP | São Paulo |
| Canada | Province | Provinces & Territories | 13 | CA-ON | Ontario |
| China | Province | Provinces & Regions | 34 | CN-BJ | Beijing |
| Australia | State | States & Territories | 8 | AU-NSW | New South Wales |
| Netherlands | Province | Provincies | 12 | NL-NH | Noord-Holland |
| Poland | Voivodeship | Województwa | 16 | PL-MZ | Mazowieckie |
Note: Netherlands and Poland also have NUTS schemes (see EU NUTS Regions) which provide finer granularity (NUTS-2 and NUTS-3 levels).
Dedicated pages: Japan and India have their own documentation pages.
For all admin-1-only countries, the matching engine accepts:
BR-SP, CA-ON, AU-NSWON for Ontario, SP for São PauloPresets: Each country has a dedicated sub-national preset:
Beyond the countries listed above, Hydrant has processed Overture Maps admin-1 boundaries for 100+ countries worldwide. These are available for map visualization and context regions but may not have dedicated selection presets. Contact support if you need sub-national data matching for a country not listed here.
| Source | License | URL |
|---|---|---|
| Overture Maps (2026-02-18.0) | CDLA Permissive 2.0 | overturemaps.org |
| Natural Earth | Public Domain | naturalearthdata.com |
Admin-1 boundaries are sourced from Overture Maps for countries with high-quality Overture coverage (USA, Japan), and from Natural Earth for other countries. Netherlands and Poland NUTS data comes from Eurostat GISCO.