Donostia / San Sebastián Population 2026
Donostia / San Sebastián has a population of 185,357, making it the #35 biggest city in 🇪🇸 Spain, located in Basque Country. Roughly 0.4% of Spain's population lives here. It is about 18× smaller than Madrid, the country's biggest city.
Population (city proper)
185,357
Rank in Spain
#35
Coordinates
43.31°N, 1.97°W
~17 m elevation · Europe/Madrid
Distance to capital (Madrid)
352 km
219 miles, straight line
Other big cities in Basque Country
| City | Population | Rank in Spain |
|---|---|---|
| Bilbao | 347,342 | #11 |
| Gasteiz / Vitoria | 257,407 | #16 |
| Barakaldo | 100,435 | #63 |
| Getxo | 80,770 | #86 |
| Irun | 61,983 | #122 |
| Santutxu | 60,000 | #128 |
| Santurtzi | 46,978 | #150 |
| Portugalete | 45,826 | #156 |
Cities near Donostia / San Sebastián
FAQ
What is the population of Donostia / San Sebastián?
Donostia / San Sebastián has a population of 185,357 (city proper, latest official figure via GeoNames), making it the #35 biggest city in Spain.
What region is Donostia / San Sebastián in?
Donostia / San Sebastián is located in Basque Country, Spain.
Is Donostia / San Sebastián the capital of Spain?
No, the capital of Spain is Madrid, about 352 km away.
Sources & notes
Population refers to the city proper (municipal boundaries), not the metropolitan area. Source: GeoNames (CC BY 4.0), retrieved 2026-07-07. Country data: UN World Population Prospects 2024.