| Tolosaldea | |
| Native Name Lang: | es |
| Settlement Type: | Eskualdea / Comarca |
| Subdivision Type: | Country |
| Subdivision Name: |  Spain |
| Subdivision Type1: | Autonomous community |
| Subdivision Name1: | Basque Country |
| Subdivision Type2: | Province |
| Subdivision Name2: | Gipuzkoa |
| Seat Type: | Main admin. HQ |
| Seat: | Tolosa |
| Parts Type: | Municipalities |
| Parts Style: | list |
| P1: | Abaltzisketa, Aduna, Albiztur, Alegia, Alkiza, Altzo, Amezketa, Anoeta, Asteasu, Baliarrain, Belauntza, Berastegi, Berrobi, Bidania-Goiatz, Elduain, Gaztelu, Hernialde, Ibarra, Ikaztegieta, Irura, Larraul, Leaburu, Lizartza, Orendain, Orexa, Tolosa, Villabona, Zizurkil |
| Area Total Km2: | 331.4 |
| Population Total: | 45495 |
| Population Density Km2: | auto |
| Blank Name Sec1: | Largest municipality |
| Timezone1: | CET |
| Utc Offset1: | +1 |
| Timezone1 Dst: | CEST |
| Utc Offset1 Dst: | +2 |
| Postal Code Type: | Postal code |
| Area Code Type: | Dialing code |
Tolosaldea is one of the eight comarcas in Gipuzkoa, formed by 28 municipalities. Tolosa is the main town.An estimated 47,880 people live in the area in 2018.
| Basque Name (Official) | Historical Spanish Name[1] | Population 2001 Census[2] | 2011 Census[3] | 2018 Estimate[4] | |
|---|---|---|---|---|---|
| Abalcisqueta | 277 | 320 | 320 | ||
| 333 | 451 | 469 | |||
| Albístur | 287 | 313 | 309 | ||
| Alegría de Oria | 1,583 | 1,763 | 1.726 | ||
| Alquiza | 264 | 365 | 374 | ||
| Alzo | 326 | 407 | 427 | ||
| Amézqueta | 980 | 969 | 939 | ||
| 1,709 | 1,836 | 2,034 | |||
| 1,290 | 1,500 | 1,533 | |||
| 97 | 125 | 137 | |||
| Belaunza | 285 | 287 | 239 | ||
| Berástegui | 973 | 1,057 | 1,081 | ||
| 566 | 568 | 602 | |||
| Bidegoyan | 427 | 536 | 508 | ||
| Elduayen | 210 | 232 | 239 | ||
| 152 | 163 | 153 | |||
| 286 | 359 | 313 | |||
| 4,208 | 4,273 | 4,172 | |||
| Icazteguieta | 377 | 469 | 488 | ||
| 910 | 1,626 | 1,862 | |||
| 145 | 237 | 253 | |||
| 367 | 388 | 377 | |||
| Lizarza | 581 | 648 | 602 | ||
| Orendáin | 143 | 180 | 218 | ||
| Oreja | 83 | 123 | 123 | ||
| 17,642 | 18,389 | 19,525 | |||
| 5,672 | 5,858 | 5,881 | |||
| Cizúrquil | 2,820 | 2,854 | 2,976 |