lat: 43.11644469999989, lon: -2.0228290999999894
| Key | Value |
| capital | 8 |
| ele | 450 |
| idee:name | Gaztelu |
| name:es | Gaztelu |
| name:eu | Gaztelu |
| place | village |
| population | 128 |
| population:date | 2023 |
| postal_code | 20491 |
| ref:ine | 20907000201 |
| source | Instituto Geográfico Nacional |
| source:date | 2011-06 |
| source:ele | MDT5 |
| source:name | Nomenclátor Geográfico de Municipios y Entidades de Población |
| wikidata | Q1641862 |
| wikipedia | eu:Gaztelu (Gipuzkoa) |
| wikipedia:es | Gaztelu (Guipúzcoa) |
| wikipedia:eu | Gaztelu (Gipuzkoa) |