| Rank
| Name
| Population
| Percentage
| Density
|
| 1
| Andalusia
| 7 478 432
| 17,9%
| 85,70/kmē
|
| 2
| Catalonia
| 6 506 440
| 15,6%
| 190,73/kmē
|
| 3
| Madrid
| 5 527 152
| 13,2%
| 688,48/kmē
|
| 4
| Valencia
| 4 326 708
| 10,3%
| 186,05/kmē
|
| 5
| Galicia
| 2 737 370
| 6,5%
| 92,36/kmē
|
| 6
| Castile-Leon
| 2 480 369
| 5,9%
| 26,32/kmē
|
| 7
| Basque Country
| 2 108 281
| 5,0%
| 291,44/kmē
|
| 8
| Canary Islands
| 1 843 755
| 4,4%
| 247,58/kmē
|
| 9
| Castile-La Mancha
| 1 782 038
| 4,3%
| 22,43/kmē
|
| 10
| Murcia
| 1 226 993
| 2,9%
| 108,46/kmē
|
| 11
| Aragon
| 1 217 514
| 2,9%
| 25,51/kmē
|
| 12
| Asturias
| 1 073 971
| 2,6%
| 101,28/kmē
|
| 13
| ExtremaduraComunidad Autonoma de Extremadura (image) ( In Detail) ( In Detail) Capital Merida Area total % of Spain Ranked 5th 41 634 kmē 8,2% Population Total (2003) % of Spain Density Ranked 13th 1 073 050 2,6% 25,77/kmē Demonym English Spanish extremeno/a Statute
| 1 073 050
| 2,6%
| 25,77/kmē
|
| 14
| Balearic IslandsComunitat Autonoma de les Illes Balears Comunidad Autonoma de las Illes Balears Capital Palma de Mallorca Official languages Catalan and Castilian Area total % of Spain Ranked 17th 4 992 kmē 1,0% Population Total (2003) % of Spain Density Ranked 14th 916
| 916 968
| 2,2%
| 183,69/kmē
|
| 15
| NavarreComunidad Foral de Navarra / Nafarroa ko Foru Komunitatea Capital Pamplona Official languages Castilian; Basque co-official in some areas Area total % of Spain Ranked 11th 10 391 kmē 2,2% Population Total (2003) % of Spain Density Ranked 15th 569 628 1,4%
| 569 628
| 1,4%
| 54,82/kmē
|
| 16
| CantabriaCantabria is an autonomous community of Spain, containing one province (also called Cantabria). It is bounded on the east by the Basque Country (province of Vizcaya), on the south by Castile-Leon (provinces of Leon, Palencia, and Burgos), on the west by A
| 542 275
| 1,3%
| 101,91/kmē
|
| 17
| La RiojaThis is about the Spanish province; La Rioja is also a city and a province in Argentina. Comunidad Autonoma de La Rioja Capital Logrono Area total % of Spain Ranked 16th 5 045 kmē 1,0% Population Total (2003) % of Spain Density Ranked 17th 281 614 0,7% 55
| 281 614
| 0,7%
| 55,82/kmē
|
|
| Spanish possessions in North AfricaIn addition to its autonomous communities, Spain claims five plazas de soberania (places of sovereignty) near Morocco. Ceuta includes Isla Perejil, subject of a confrontation with Morocco in 2002 Melilla, Islas Chafarinas, Penon de Alhucemas, Penon de Vel
| 145 336
| 0,3%
| 4404,12/kmē
|
| TOTAL
| 41 837 894
| 100%
| 82,69/kmē
|