| Original Region | Original Region Name | Modified Region | Modified Region Name | ||||
| Belgium - Aggregated to NUTS1 due to very small land area of NUTS2 regions | |||||||
| NUTS-BE10 | Brussels | NUTS-BE1 | Brussels | ||||
| NUTS-BE21 | Prov. Antwerpen | NUTS-BE2 | Vlaams Gewest | ||||
| NUTS-BE22 | Prov. Limburg (B) | NUTS-BE2 | Vlaams Gewest | ||||
| NUTS-BE23 | Prov. Oost-Vlaanderen | NUTS-BE2 | Vlaams Gewest | ||||
| NUTS-BE24 | Prov. Vlaams-Brabant | NUTS-BE2 | Vlaams Gewest | ||||
| NUTS-BE25 | Prov. West-Vlaanderen | NUTS-BE2 | Vlaams Gewest | ||||
| NUTS-BE31 | Prov. Brabant Wallon | NUTS-BE3 | Région Wallonne | ||||
| NUTS-BE32 | Prov. Hainaut | NUTS-BE3 | Région Wallonne | ||||
| NUTS-BE33 | Prov. Liège | NUTS-BE3 | Région Wallonne | ||||
| NUTS-BE34 | Prov. Luxembourg (B) | NUTS-BE3 | Région Wallonne | ||||
| NUTS-BE35 | Prov. Namur | NUTS-BE3 | Région Wallonne | ||||
| Germany - NUTS2 codes changes in 2004 | |||||||
| NUTS-DE40 | Brandenburg | NUTS-DE4 | Brandenburg | ||||
| NUTS-DE41 | Brandenburg - Nordost | NUTS-DE4 | Brandenburg | ||||
| NUTS-DE42 | Brandenburg - Südwest | NUTS-DE4 | Brandenburg | ||||
| Spain - African territories merged with the mainland | |||||||
| NUTS-ES63 | Ciudad Autónoma de Ceuta | NUTS-ES61 | Andalucía | ||||
| NUTS-ES64 | Ciudad Autónoma de Melilla | NUTS-ES61 | Andalucía | ||||
| Finland - Minor islands merged with the mainland | |||||||
| NUTS-FI20 | Åland | NUTS-FI18 | Etelä-Suomi | ||||
| France - Overseas possessions removed | |||||||
| NUTS-FR91 | Guadeloupe | ||||||
| NUTS-FR92 | Martinique | ||||||
| NUTS-FR93 | Guyane | ||||||
| NUTS-FR94 | Réunion | ||||||
| Greece - Aggregated to NUTS1 due to very small population of NUTS2 regions | |||||||
| NUTS-GR11 | Anatoliki Makedonia, Thraki | NUTS-GR1 | Voreia Ellada | ||||
| NUTS-GR12 | Kentriki Makedonia | NUTS-GR1 | Voreia Ellada | ||||
| NUTS-GR13 | Dytiki Makedonia | NUTS-GR1 | Voreia Ellada | ||||
| NUTS-GR14 | Thessalia | NUTS-GR1 | Voreia Ellada | ||||
| NUTS-GR21 | Ipeiros | NUTS-GR2 | Kentriki Ellada | ||||
| NUTS-GR22 | Ionia Nisia | NUTS-GR2 | Kentriki Ellada | ||||
| NUTS-GR23 | Dytiki Ellada | NUTS-GR2 | Kentriki Ellada | ||||
| NUTS-GR24 | Sterea Ellada | NUTS-GR2 | Kentriki Ellada | ||||
| NUTS-GR25 | Peloponnisos | NUTS-GR2 | Kentriki Ellada | ||||
| NUTS-GR30 | Attiki | NUTS-GR3 | Attiki | ||||
| NUTS-GR41 | Voreio Aigaio | NUTS-GR4 | Nisia Aigaiou, Kriti | ||||
| NUTS-GR42 | Notio Aigaio | NUTS-GR4 | Nisia Aigaiou, Kriti | ||||
| NUTS-GR43 | Kriti | NUTS-GR4 | Nisia Aigaiou, Kriti | ||||
| Ireland - Aggregated to NUTS1 due to unavailability of data for NUTS2 | |||||||
| NUTS-IE01 | Border, Midland and Western | NUTS-IE0 | Ireland | ||||
| NUTS-IE02 | Southern and Eastern | NUTS-IE0 | Ireland | ||||
| Netherlands - Aggregated to NUTS1 due to very small land area of NUTS2 regions | |||||||
| NUTS-NL11 | Groningen | NUTS-NL1 | Noord-Nederland | ||||
| NUTS-NL12 | Friesland | NUTS-NL1 | Noord-Nederland | ||||
| NUTS-NL13 | Drenthe | NUTS-NL1 | Noord-Nederland | ||||
| NUTS-NL21 | Overijssel | NUTS-NL2 | Oost-Nederland | ||||
| NUTS-NL22 | Gelderland | NUTS-NL2 | Oost-Nederland | ||||
| NUTS-NL23 | Flevoland | NUTS-NL2 | Oost-Nederland | ||||
| NUTS-NL31 | Utrecht | NUTS-NL3 | West-Nederland | ||||
| NUTS-NL32 | Noord-Holland | NUTS-NL3 | West-Nederland | ||||
| NUTS-NL33 | Zuid-Holland | NUTS-NL3 | West-Nederland | ||||
| NUTS-NL34 | Zeeland | NUTS-NL3 | West-Nederland | ||||
| NUTS-NL41 | Noord-Brabant | NUTS-NL4 | Zuid-Nederland | ||||
| NUTS-NL42 | Limburg (NL) | NUTS-NL4 | Zuid-Nederland | ||||
| Portugal - Overseas possessions removed | |||||||
| NUTS-PT20 | Região Autónoma dos Açores | ||||||
| NUTS-PT30 | Região Autónoma da Madeira | ||||||
| Turkey - Aggregated to NUTS1 due to very small population of NUTS2 regions | |||||||
| NUTS-TR10 | Istanbul | NUTS-TR1 | Istanbul | ||||
| NUTS-TR21 | Tekirdag | NUTS-TR2 | Bati Marmara | ||||
| NUTS-TR22 | Balikesir | NUTS-TR2 | Bati Marmara | ||||
| NUTS-TR31 | Izmir | NUTS-TR3 | Ege | ||||
| NUTS-TR32 | Aydin | NUTS-TR3 | Ege | ||||
| NUTS-TR33 | Manisa | NUTS-TR3 | Ege | ||||
| NUTS-TR41 | Bursa | NUTS-TR4 | Dogu Marmara | ||||
| NUTS-TR42 | Kocaeli | NUTS-TR4 | Dogu Marmara | ||||
| NUTS-TR51 | Ankara | NUTS-TR5 | Bati Anadolu | ||||
| NUTS-TR52 | Konya | NUTS-TR5 | Bati Anadolu | ||||
| NUTS-TR61 | Antalya | NUTS-TR6 | Akdeniz | ||||
| NUTS-TR62 | Adana | NUTS-TR6 | Akdeniz | ||||
| NUTS-TR63 | Hatay | NUTS-TR6 | Akdeniz | ||||
| NUTS-TR71 | Kirikkale | NUTS-TR7 | Orta Anadolu | ||||
| NUTS-TR72 | Kayseri | NUTS-TR7 | Orta Anadolu | ||||
| NUTS-TR81 | Zonguldak | NUTS-TR8 | Bati Karadeniz | ||||
| NUTS-TR82 | Kastamonu | NUTS-TR8 | Bati Karadeniz | ||||
| NUTS-TR83 | Samsun | NUTS-TR8 | Bati Karadeniz | ||||
| NUTS-TR90 | Trabzon | NUTS-TR9 | Dogu Karadeniz | ||||
| NUTS-TRA1 | Erzurum | NUTS-TRA | Kuzeydogu Anadolu | ||||
| NUTS-TRA2 | Agri | NUTS-TRA | Kuzeydogu Anadolu | ||||
| NUTS-TRB1 | Malatya | NUTS-TRB | Ortadogu Anadolu | ||||
| NUTS-TRB2 | Van | NUTS-TRB | Ortadogu Anadolu | ||||
| NUTS-TRC1 | Gaziantep | NUTS-TRC | Guneydogu Anadolu | ||||
| NUTS-TRC2 | Sanliurfa | NUTS-TRC | Guneydogu Anadolu | ||||
| NUTS-TRC3 | Mardin | NUTS-TRC | Guneydogu Anadolu | ||||
This table depicts the way the regions have been aggregated for analysis and the reasons for aggregation in each particular case.