| Basque Country | Alava | Bizkaia | Gipuzkoa | |||||
| Families | Average size | Families | Average size | Families | Average size | Families | Average size | |
| Total | 787,0 | 2,64 | 111,3 | 2,66 | 423,5 | 2,62 | 252,1 | 2,65 |
| Unipersonal | 169,7 | 1,00 | 24,7 | 1,00 | 89,7 | 1,00 | 55,2 | 1,00 |
| Composed | 21,3 | 2,34 | 3,4 | 2,55 | 11,3 | 2,27 | 6,6 | 2,32 |
| Nuclear without children | 164,7 | 2,00 | 23,8 | 2,00 | 87,5 | 2,00 | 53,4 | 2,00 |
| Nuclear with children | 299,3 | 3,59 | 43,4 | 3,61 | 161,3 | 3,56 | 94,5 | 3,61 |
| Single parent | 65,5 | 2,39 | 8,0 | 2,49 | 37,5 | 2,37 | 20,0 | 2,37 |
| Extended | 38,1 | 4,00 | 4,6 | 3,92 | 21,4 | 4,00 | 12,0 | 4,04 |
| Polynuclear | 28,5 | 5,33 | 3,3 | 5,41 | 14,7 | 5,27 | 10,4 | 5,37 |
Date Februay 26, 2008
Source: EUSTAT. Demographic survey, 2006.
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