| Name | Population | Latitude/Longitude |
| 1 | Madrid, Autonomous Region of Madrid |
3,117,977 |
40.417 / -3.703 |
| 2 | Barcelona, Catalonia |
1,581,595 |
41.389 / 2.159 |
| 3 | Valencia, Valencian Community |
805,304 |
39.47 / -0.377 |
| 4 | Sevilla, Andalusia |
701,894 |
37.377 / -5.987 |
| 5 | Zaragoza, Aragon |
649,404 |
41.656 / -0.877 |
| 6 | Málaga, Andalusia |
550,058 |
36.72 / -4.42 |
| 7 | Murcia, Region of Murcia |
406,807 |
37.983 / -1.117 |
| 8 | Las Palmas de Gran Canaria, Canary Islands |
378,495 |
28.1 / -15.417 |
| 9 | Palma, Balearic Islands |
375,773 |
39.569 / 2.65 |
| 10 | Bilbao, Basque Country |
351,409 |
43.263 / -2.925 |