Population and Housing Censuses National results Main dwellings according to household size by useful surface Units: main dwellings Total (useful surface) Less than 30m2 Between 30 and 45m2 Between 46 and 60m2 Between 61 and 75m2 Between 76 and 90m2 Between 91 and 105m2 Between 106 and 120m2 Between 121 and 150m2 Between 151 and 180m2 More than 180m2 Total (household size) 18,083,692 50,438 535,426 1,969,210 3,360,926 5,354,922 2,461,922 1,650,776 1,310,374 568,273 821,427 1 person 4,193,319 28,710 271,792 720,571 907,303 1,136,721 468,658 274,951 199,139 77,432 108,042 2 persons 5,441,840 13,008 157,243 640,403 1,076,481 1,589,670 732,681 482,921 371,927 155,153 222,353 3 persons 3,916,574 4,688 60,599 337,958 706,662 1,238,372 571,505 382,073 300,603 132,077 182,037 4 persons 3,353,076 2,928 31,650 195,273 504,892 1,068,398 516,636 375,083 318,013 142,015 198,188 5 persons 857,861 799 9,707 53,197 118,276 238,745 126,481 101,074 89,935 44,532 75,114 6 or more persons 321,022 305 4,434 21,808 47,311 83,015 45,962 34,673 30,757 17,064 35,693 Notes: Source: National Statistics Institute