| Comunidad | Capital | Superficie |
| Andalucía | Sevilla | 87,268 |
| Aragón | Zaragoza | 47,650 |
| Asturias | Oviedo | 10,565 |
| Islas Baleares | Palma de Mallorca | 5,014 |
| Islas Canarias | Santa Cruz de Tenerife | 7,242 |
| Cantabria | Santander | 5,289 |
| Castilla - La Mancha | Toledo | 79,230 |
| Castilla y León | Valladolid | 94,193 |
| Cataluña | Barcelona | 31,930 |
| Extremadura | Mérida | 41,602 |
| Galicia | Santiago de Compostela | 29,434 |
| La Rioja | Logroño | 5,034 |
| Madrid | Madrid | 7,995 |
| Murcia | Murcia | 11,317 |
| Navarra | Pamplona | 10,421 |
| País Vasco | Vitoria-Gasteiz | 7,261 |
| Valencia | Valencia | 23,305 |
| |
| Comunidad | 1991 | 2001 |
| Andalucía | 6,940,522 | 7,357,558 |
| Aragón | 1,188,817
| 1,204,215 |
| Asturias | 1,093,937 | 1,062,998 |
| Islas Baleares | 709,138 | 841,669 |
| Islas Canarias | 1,493,784 | 1,694,477 |
| Cantabria | 527,326 | 535,131 |
| Castilla - La Mancha | 1,658,446 | 1,760,516 |
| Castilla y León | 2,545,926 | 2,456,474 |
| Cataluña | 6,059,494 | 6,343,110 |
| Extremadura | 1,061,852 | 1,058,503 |
| Galicia | 2,731,669 | 2,695,880 |
| La Rioja | 263,434 | 276,702 |
| Madrid | 4,947,555 | 5,423,384 |
| Murcia | 1,045,601 | 1,197,646 |
| Navarra | 519,277 | 555,829 |
| País Vasco | 2,104,041 | 2,082,587 |
| Valencia | 3,857,234 | 4,162,776 |
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