| Code | Name | Corresponding second-level subdivisions | Map | 
 
| AT |  Austria | 
| AT1 | East Austria | Burgenland, Lower Austria, Vienna |  | 
| AT2 | South Austria | Carinthia, Styria | 
| AT3 | West Austria | Upper Austria, Salzburg, Tyrol, Vorarlberg | 
| BE |  Belgium | 
| BE1 | Brussels Capital Region | Brussels Capital Region |  | 
| BE2 | Flemish Region | Antwerp, Limburg, East Flanders, Flemish Brabant, West Flanders | 
| BE3 | Walloon Region | Walloon Brabant, Hainaut, Liège, Luxembourg, Namur | 
| BG |  Bulgaria | 
| BG3 | Northern and Eastern Bulgaria | Severozapaden, Severen tsentralen, Severoiztochen, Yugoiztochen |  | 
| BG4 | South-Western and South-Central Bulgaria | Yugozapaden, Yuzhen tsentralen | 
| CY |  Cyprus | 
| CY0 | Cyprus | Cyprus |  | 
| CZ |  Czech Republic | 
| CZ0 | Czech Republic | Prague, Central Bohemia, Southwest, Northwest, Northeast, Southeast, Central Moravia, Moravia-Silesia |  | 
| DE |  Germany | 
| DE1 | Baden-Württemberg | Stuttgart, Karlsruhe, Freiburg, Tübingen |  | 
| DE2 | Bavaria | Upper Bavaria, Lower Bavaria, Upper Palatinate, Upper Franconia, Middle Franconia, Lower Franconia, Swabia | 
| DE3 | Berlin | Berlin | 
| DE4 | Brandenburg | Brandenburg-Northeast, Brandenburg-Southwest | 
| DE5 | Free Hanseatic City of Bremen | Free Hanseatic City of Bremen | 
| DE6 | Hamburg | Hamburg | 
| DE7 | Hessen | Darmstadt, Gießen, Kassel | 
| DE8 | Mecklenburg-Vorpommern | Mecklenburg-Vorpommern | 
| DE9 | Lower Saxony | Braunschweig, Hanover, Lüneburg, Weser-Ems | 
| DEA | North Rhine-Westphalia | Düsseldorf, Cologne, Münster, Detmold, Arnsberg | 
| DEB | Rhineland-Palatinate | Koblenz, Trier, Rheinhessen-Pfalz | 
| DEC | Saarland | Saarland | 
| DED | Saxony | Chemnitz, Dresden, Leipzig | 
| DEE | Saxony-Anhalt | Saxony-Anhalt | 
| DEF | Schleswig-Holstein | Schleswig-Holstein | 
| DEG | Thuringia | Thuringia | 
| DK |  Denmark | 
| DK0 | Denmark | Hovedstaden, Zealand, Region of Southern Denmark, Central Jutland, North Jutland |  | 
| EE |  Estonia | 
| EE0 | Estonia | Estonia |  | 
| EL |  Greece | 
| EL3 | Attica | Attica |  | 
| EL4 | Nisia Aigaiou, Kriti | North Aegean, South Aegean, Crete | 
| EL5 | Voreia Ellada | Eastern Macedonia and Thrace, Central Macedonia, Western Macedonia, Epirus | 
| EL6 | Kentriki Ellada | Thessaly, Ionian Islands, Western Greece, Central Greece, Peloponnese | 
| ES |  Spain | 
| ES1 | North West | Galicia, Asturias, Cantabria |  | 
| ES2 | North East | Basque Community, Navarre, La Rioja, Aragon | 
| ES3 | Community of Madrid | Community of Madrid | 
| ES4 | Centre | Castile and León, Castile-La Mancha, Extremadura | 
| ES5 | East | Catalonia, Valencian Community, Balearic Islands | 
| ES6 | South | Andalusia, Region of Murcia, Ceuta, Melilla | 
| ES7 | Canary Islands | Canary Islands | 
| FI |  Finland | 
| FI1 | Mainland Finland | East Finland, South Finland, West Finland, North Finland |  | 
| FI2 | Åland | Åland | 
| FR |  France | 
| FR1 | Île-de-France | Île-de-France |  | 
| FR2 | Paris basin | Champagne-Ardenne, Picardy, Upper Normandy, Centre, Lower Normandy, Burgundy | 
| FR3 | Nord-Pas-de-Calais | Nord-Pas-de-Calais | 
| FR4 | East | Lorraine, Alsace, Franche-Comté | 
| FR5 | West | Pays de la Loire, Brittany, Poitou-Charentes | 
| FR6 | South West | Aquitaine, Midi-Pyrénées, Limousin | 
| FR7 | Centre East | Rhône-Alpes, Auvergne | 
| FR8 | Mediterranean | Languedoc-Roussillon, Provence-Alpes-Côte d'Azur, Corsica | 
| FRA | Overseas departments | Guadeloupe, Martinique, French Guiana, La Réunion, Mayotte | 
| HR |  Croatia | 
| HR0 | Croatia | Continental Croatia, Adriatic Croatia | .png) | 
| HU |  Hungary | 
| HU1 | Central Hungary | Central Hungary |  | 
| HU2 | Transdanubia | Central Transdanubia, Western Transdanubia, Southern Transdanubia | 
| HU3 | Great Plain and North | Northern Hungary, Northern Great Plain, Southern Great Plain | 
| IE |  Ireland | 
| IE0 | Ireland | Border, Midland and Western, Southern and Eastern |  | 
| IT |  Italy | 
| ITC | North West | Aosta Valley, Liguria, Lombardy, Piedmont |  | 
| ITH | North East | Emilia-Romagna, Friuli-Venezia Giulia, Trentino-Alto Adige/Südtirol, Veneto | 
| ITI | Centre | Lazio, Marche, Tuscany, Umbria | 
| ITF | South | Abruzzo, Apulia, Basilicata, Calabria, Campania, Molise | 
| ITG | Islands | Sardinia, Sicily | 
| LT |  Lithuania | 
| LT0 | Lithuania | Lithuania |  | 
| LU |  Luxembourg | 
| LU0 | Luxembourg | Luxembourg |  | 
| LV |  Latvia | 
| LV0 | Latvia | Latvia |  | 
| MT |  Malta | 
| MT0 | Malta | Malta |  | 
| NL |  Netherlands | 
| NL1 | North Netherlands | Groningen, Friesland, Drenthe |  | 
| NL2 | East Netherlands | Overijssel, Gelderland, Flevoland | 
| NL3 | West Netherlands | Utrecht, North Holland, South Holland, Zeeland | 
| NL4 | South Netherlands | North Brabant, Limburg | 
| PL |  Poland | 
| PL1 | Central Region | Łódź, Mazovia |  | 
| PL2 | South Region | Lesser Poland, Silesia | 
| PL3 | East Region | Lublin, Subcarpathian, Świętokrzyskie, Podlaskie | 
| PL4 | Northwest Region | Greater Poland, West Pomerania, Lubusz | 
| PL5 | Southwest Region | Lower Silesia, Opole Voivodeship | 
| PL6 | North Region | Kuyavian-Pomeranian, Varmia-Masuria, Pomerania | 
| PT |  Portugal | 
| PT1 | Mainland Portugal | Norte, Algarve, Centro, Lisbon, Alentejo |  | 
| PT2 | Azores | Azores | 
| PT3 | Madeira | Madeira | 
| RO |  Romania | 
| RO1 | One | Nord-Vest, Centru |  | 
| RO2 | Two | Nord-Est, Sud-Est | 
| RO3 | Three | Sud - Muntenia, București - Ilfov | 
| RO4 | Four | Sud-Vest Oltenia, Vest | 
| SE |  Sweden | 
| SE1 | East Sweden | Stockholm County, East Middle Sweden |  | 
| SE2 | South Sweden | Småland and the islands, South Sweden, West Sweden | 
| SE3 | North Sweden | North Middle Sweden, Middle Norrland, Upper Norrland | 
| SI |  Slovenia | 
| SI0 | Slovenia | Eastern Slovenia, Western Slovenia |  | 
| SK |  Slovakia | 
| SK0 | Slovakia | Bratislava Region, Western Slovakia, Central Slovakia, Eastern Slovakia |  | 
| UK |  United Kingdom | 
| UKC | North East England | Tees Valley & Durham, Northumberland & Tyne and Wear |  | 
| UKD | North West England | Cumbria, Cheshire, Greater Manchester, Lancashire, Merseyside | 
| UKE | Yorkshire and the Humber | East Yorkshire & Northern Lincolnshire (Humberside), North Yorkshire, South Yorkshire, West Yorkshire | 
| UKF | East Midlands | Derbyshire, Nottinghamshire, Leicestershire, Rutland, Northamptonshire, Lincolnshire | 
| UKG | West Midlands | Herefordshire, Worcestershire, Warwickshire, Shropshire, Staffordshire, West Midlands | 
| UKH | East of England | East Anglia, Bedfordshire, Hertfordshire, Essex | 
| UKI | Greater London | Inner London, Outer London | 
| UKJ | South East England | Berkshire, Buckinghamshire, Oxfordshire, Surrey, East Sussex, West Sussex, Hampshire, Isle of Wight, Kent | 
| UKK | South West England | Gloucestershire, Wiltshire, Bristol, Dorset, Somerset, Cornwall and Isles of Scilly, Devon | 
| UKL | Wales | West Wales, The Valleys, East Wales | 
| UKM | Scotland | Eastern Scotland, South Western Scotland, North Eastern Scotland, Highlands and Islands | 
| UKN | Northern Ireland | Northern Ireland |