| ISO-3166-2 | Fips | GN | Name of Subdivision | Type | Capital | Population | area in km² | lang | continent | From | Till |
| 1 | AN | 51 | 51 | Comunidad Autónoma de Andalucía  | autonomous community | Sevilla | 6,949,643 | 87,710.3 | es | EU | | |
| 2 | AR | 52 | 52 | Comunidad Autónoma de Aragón  | autonomous community | Zaragoza | 1,226,431 | 47,663.8 | es | EU | | |
| 3 | AS | 34 | 34 | Comunidad Autónoma del Principado de Asturias  | autonomous community | Oviedo | 1,139,435 | 10,554.0 | es | EU | | |
| 4 | CB | 39 | 39 | Comunidad Autónoma de Cantabria  | autonomous community | Santander | 531,972 | 5,287.4 | es | EU | | |
| 5 | CE | | CE | Ceuta  | | Ceuta | | | es | AF | | |
| 6 | CL | 55 | 55 | Comunidad Autónoma de Castilla y León  | autonomous community | Valladolid | 2,653,801 | 94,192.7 | es | EU | | |
| 7 | CM | 54 | 54 | Comunidad Autónoma de Castilla-La Mancha  | autonomous community | Toledo | 1,727,217 | 79,340.4 | es | EU | | |
| 8 | CN | 53 | 53 | Comunidad Autónoma de Canarias  | autonomous community | Las Palmas de Gran Canaria | 790,897 | 7,493.3 | es | AF | | |
| 9 | CT | 56 | 56 | Catalunya  | autonomous community | Barcelona | 6,057,372 | 32,027.5 | ca,es,oc | EU | | |
| 10 | EX | 57 | 57 | Comunidad Autónoma de Extremadura  | autonomous community | Mérida | 1,136,811 | 41,594.2 | es | EU | | |
| 11 | GA | 58 | 58 | Comunidad Autónoma de Galicia  | autonomous community | Santiago de Compostela | 2,834,558 | 29,456.5 | es,gl | EU | | |
| 12 | IB | 07 | 07 | Comunidad Autónoma de las Islas Baleares  | autonomous community | Palma | 687,193 | 5,087.9 | ca,es | EU | | |
| 13 | MC | 31 | 31 | Comunidad Autónoma de la Región de Murcia  | autonomous community | Murcia | 1,030,537 | 11,344.7 | es | EU | | |
| 14 | MD | 29 | 29 | Comunidad de Madrid  | community | Madrid | 4,905,019 | 8,000.5 | es | EU | | |
| 15 | ML | | ML | Melilla  | | Melilla | | | es | AF | | |
| 16 | NC | 32 | 32 | Comunidad Foral de Navarra  | statutory community | Pamplona / Iruñea | 525,815 | 10,430.1 | es | EU | | |
| 17 | PV | 59 | 59 | Euskal Autonomia Erkidegoa  | autonomous community | Vitoria-Gasteiz | 2,147,567 | 7,172.3 | eu,es | EU | | |
| 18 | RI | 27 | 27 | Comunidad Autónoma de La Rioja  | autonomous community | Logroño | 263,513 | 5,023.5 | es | EU | | |
| 19 | VC | 60 | 60 | Comunidad Valenciana  | autonomous community | Valencia | 3,814,937 | 23,232.0 | ca,es | EU | | |