Donostia-San Sebastián has a population of approximately 187,000 residents, making it a relatively small city by European standards. However, its cosmopolitan nature and international appeal attract a diverse demographic of visitors year-round. The population is primarily composed of Basque-speaking locals, though Spanish is also widely spoken, and the city has a growing number of expatriates, students, and tourists who add to its vibrant cultural fabric.
The city’s population tends to swell in the summer months as visitors from across Spain and Europe come to enjoy its beaches and cultural offerings. Donostia is also known for its progressive policies, promoting sustainability, inclusivity, and cultural diversity.