| Basque Country | Alava | Bizkaia | Gipuzkoa | |
| Area (Km2) | 7.234,8 | 3.037,3 | 2.217,2 | 1.980,3 |
| nº of municipalities | 251 | 51 | 112 | 88 |
| Number of municipalities by population size groups (inhab.) | ||||
| <=500 | 63 | 18 | 22 | 23 |
| 501-2000 | 84 | 24 | 38 | 22 |
| 2001-5000 | 35 | 6 | 19 | 10 |
| 5001-10000 | 28 | 0 | 14 | 14 |
| 10001-30000 | 30 | 2 | 12 | 16 |
| 30001-50000 | 5 | 0 | 4 | 1 |
| >50000 | 6 | 1 | 3 | 2 |
Date March 28, 2011
Source: INE
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