| Población en viviendas familiares de comunidades autónomas con lengua propia y con 16 años o más, según conocimiento de la lengua propia por provincia de residencia |
| No lo entiende | Sólo lo entiende | Sólo lo entiende y lo sabe leer | Sólo lo entiende y lo sabe hablar | Lo entiende y lo sabe hablar y leer, pero no escribir | Lo entiende y lo sabe hablar, leer, y escribir | No es aplicable | TOTAL | ||
| TOTAL | TOTAL | 13,28% | 16,02% | 5,93% | 8,30% | 13,97% | 41,05% | 1,45% | 14159196 |
| 01-Álava | 62,83% | 3,15% | 1,30% | 1,10% | 0,82% | 30,80% | . | 246007 | |
| 03-Alicante/Alacant | 24,24% | 33,94% | 5,86% | 10,82% | 9,74% | 15,40% | . | 1213292 | |
| 07-Balears (Illes) | 11,58% | 20,33% | 6,79% | 7,65% | 17,99% | 35,65% | . | 697553 | |
| 08-Barcelona | 6,01% | 17,53% | 9,25% | 2,44% | 17,97% | 46,81% | . | 4074261 | |
| 12-Castellón/Castelló | 6,52% | 22,82% | 6,93% | 13,85% | 22,52% | 27,36% | . | 408182 | |
| 15-Coruña (A) | 0,66% | 6,57% | 1,63% | 20,61% | 11,51% | 59,02% | . | 952816 | |
| 17-Girona | 4,32% | 10,99% | 5,17% | 2,34% | 18,95% | 58,23% | . | 475696 | |
| 20-Guipúzcoa | 30,70% | 4,61% | 0,54% | 4,04% | 2,01% | 58,11% | . | 577858 | |
| 25-Lleida | 2,65% | 9,01% | 4,17% | 3,74% | 23,74% | 56,70% | . | 307728 | |
| 27-Lugo | 0,27% | 3,18% | 0,93% | 18,95% | 10,89% | 65,78% | . | 315361 | |
| 31-Navarra | 39,69% | 1,53% | 0,32% | 1,23% | 0,92% | 12,29% | 44,02% | 466769 | |
| 32-Ourense | 0,35% | 4,24% | 0,91% | 32,32% | 11,58% | 50,62% | . | 297390 | |
| 36-Pontevedra | 0,62% | 8,80% | 1,42% | 26,81% | 9,69% | 52,66% | . | 769107 | |
| 43-Tarragona | 4,44% | 13,40% | 6,37% | 3,84% | 20,48% | 51,47% | . | 513264 | |
| 46-Valencia/València | 7,30% | 28,38% | 10,39% | 9,54% | 19,05% | 25,34% | . | 1867660 | |
| 48-Vizcaya | 52,84% | 3,57% | 1,18% | 2,43% | 1,52% | 38,46% | . | 976252 | |
| 11,58% | 20,33% | 6,79% | 7,65% | 17,99% | 35,65% | . | 697553 | ||
| Balears (Illes) | TOTAL | ||||||||
| 07-Balears (Illes) | 11,58% | 20,33% | 6,79% | 7,65% | 17,99% | 35,65% | . | 697553 | |
| Cataluña | TOTAL | 5,52% | 16,07% | 8,32% | 2,64% | 18,62% | 48,83% | . | 5370949 |
| 08-Barcelona | 6,01% | 17,53% | 9,25% | 2,44% | 17,97% | 46,81% | . | 4074261 | |
| 17-Girona | 4,32% | 10,99% | 5,17% | 2,34% | 18,95% | 58,23% | . | 475696 | |
| 25-Lleida | 2,65% | 9,01% | 4,17% | 3,74% | 23,74% | 56,70% | . | 307728 | |
| 43-Tarragona | 4,44% | 13,40% | 6,37% | 3,84% | 20,48% | 51,47% | . | 513264 | |
| Comunidad Valenciana | TOTAL | 13,10% | 29,66% | 8,41% | 10,49% | 16,22% | 22,12% | . | 3489134 |
| 03-Alicante/Alacant | 24,24% | 33,94% | 5,86% | 10,82% | 9,74% | 15,40% | . | 1213292 | |
| 12-Castellón/Castelló | 6,52% | 22,82% | 6,93% | 13,85% | 22,52% | 27,36% | . | 408182 | |
| 46-Valencia/València | 7,30% | 28,38% | 10,39% | 9,54% | 19,05% | 25,34% | . | 1867660 | |
| Galicia | TOTAL | 0,55% | 6,55% | 1,37% | 23,92% | 10,84% | 56,77% | . | 2334674 |
| 15-Coruña (A) | 0,66% | 6,57% | 1,63% | 20,61% | 11,51% | 59,02% | . | 952816 | |
| 27-Lugo | 0,27% | 3,18% | 0,93% | 18,95% | 10,89% | 65,78% | . | 315361 | |
| 32-Ourense | 0,35% | 4,24% | 0,91% | 32,32% | 11,58% | 50,62% | . | 297390 | |
| 36-Pontevedra | 0,62% | 8,80% | 1,42% | 26,81% | 9,69% | 52,66% | . | 769107 | |
| Navarra (Comunidad Foral de) | TOTAL | 39,69% | 1,53% | 0,32% | 1,23% | 0,92% | 12,29% | 44,02% | 466769 |
| 31-Navarra | 39,69% | 1,53% | 0,32% | 1,23% | 0,92% | 12,29% | 44,02% | 466769 | |
| País Vasco | TOTAL | 47,10% | 3,84% | 0,99% | 2,76% | 1,59% | 43,72% | . | 1800117 |
| 01-Álava | 62,83% | 3,15% | 1,30% | 1,10% | 0,82% | 30,80% | . | 246007 | |
| 20-Guipúzcoa | 30,70% | 4,61% | 0,54% | 4,04% | 2,01% | 58,11% | . | 577858 | |
| 48-Vizcaya | 52,84% | 3,57% | 1,18% | 2,43% | 1,52% | 38,46% | . | 976252 | |
| El conocimiento de lenguas propias tuvo formulaciones distintas,dependiendo de la comunidad autónoma. |
| En Navarra, los datos no van referidos a todos los municipios, por ello figura la categoría 'No es aplicable' correspondiente a los residentes en municipios monolingües, en donde no se ha investigado el conocimiento de lenguas propias |