This is a ranked list by population, as for 1 January 2012, for Spain's autonomous communities, as well as for the autonomous cities of Ceuta and Melilla.^[1]

Rank	Region	Population	%	Density (inhab./km²)
01	Andalusia	8,449,985	17.88%	96.46
02	Catalonia	7,570,908	16.02%	235.76
03	Community of Madrid	6,498,560	13.75%	809.49
04	Valencian Community	5,129,266	10.85%	220.57
05	Galicia	2,781,498	5.88%	94.05
06	Castile and León	2,546,078	5.39%	27.02
07	Basque Country	2,193,093	4.64%	303.12
08	Castile-La Mancha	2,121,888	4.49%	26.70
09	Canary Islands	2,118,344	4.48%	284.46
10	Murcia	1,474,449	3.12%	130.33
11	Aragon	1,349,467	2.86%	28.28
12	Balearic Islands	1,119,439	2.37%	224.25
13	Extremadura	1,108,130	2.34%	26.62
14	Asturias	1,077,360	2.28%	101.60
15	Navarre	644,566	1.36%	62.04
16	Cantabria	593,861	1.26%	111.61
17	La Rioja	323,609	0.68%	64.14
Autonomous cities
-	Ceuta	84,018	0.18%	4,422
-	Melilla	80,802	0.17%	6,215.54
Total:   Spain		47,265,321	100%	93.41

• Ranked list of Spanish autonomous communities by area