Galdácano is home to approximately 30,000 residents, the majority of whom identify as Basque. The town is characterized by a strong sense of community and pride in its Basque heritage, with the local language, Euskara, widely spoken alongside Spanish. In recent years, the city has experienced modest population growth, driven by its close proximity to Bilbao and its appeal as a quieter, suburban alternative to larger cities.
The population is relatively diverse, with a mix of young families, working professionals, and retirees. This demographic blend contributes to a dynamic community that balances tradition with modernity, making Galdácano an attractive place to live and visit.