Population in Onsala compared to Santander
Onsala: 12.415 (2020)
Santander: 175.425 (2025)
In Onsala the population is about 7% of the population of Santander.
Size of Onsala compared to Santander
Onsala: ca. 11 km²
Santander: ca. 36 km²
Onsala has a land area approximately 71% smaller than Santander
Population density of Onsala compared to Santander
Onsala: ca. 1.135 Einwohner/km²
Santander: ca. 4.862 Einwohner/km²
The population density of Onsala is about 23% of that of Santander.
City comparison between Onsala and other cities
more about Onsala (Halland County, Sweden)
more about Santander (Cantabria, Spain)