1 | Andalusia | 7 478 432 | 17,9% | 85,70/km² |
2 | Catalonia | 6 506 440 | 15,6% | 190,73/km² |
3 | Madrid | 5 527 152 | 13,2% | 688,48/km² |
4 | Valencia | 4 326 708 | 10,3% | 186,05/km² |
5 | Galicia | 2 737 370 | 6,5% | 92,36/km² |
6 | Castile-Leon | 2 480 369 | 5,9% | 26,32/km² |
7 | Basque Country | 2 108 281 | 5,0% | 291,44/km² |
8 | Canary Islands | 1 843 755 | 4,4% | 247,58/km² |
9 | Castile-La Mancha | 1 782 038 | 4,3% | 22,43/km² |
10 | Murcia | 1 226 993 | 2,9% | 108,46/km² |
11 | Aragon | 1 217 514 | 2,9% | 25,51/km² |
12 | Asturias | 1 073 971 | 2,6% | 101,28/km² |
13 | Extremadura | 1 073 050 | 2,6% | 25,77/km² |
14 | Balearic Islands | 916 968 | 2,2% | 183,69/km² |
15 | Navarre | 569 628 | 1,4% | 54,82/km² |
16 | Cantabria | 542 275 | 1,3% | 101,91/km² |
17 | La Rioja | 281 614 | 0,7% | 55,82/km² |
— | Spanish possessions in North Africa | 145 336 | 0,3% | 4404,12/km² |
TOTAL | 41 837 894 | 100% | 82,69/km² |