Population in San Francisco compared to Siena
San Francisco: 808.988 (2023)
Siena: 52.991 (2025)
In San Francisco there are about 15.3 time more people living, as in Siena.
Size of San Francisco compared to Siena
San Francisco: ca. 601 km²
Siena: ca. 119 km²
San Francisco Finland has a land area approximately. 5.1 times larger than that of Siena.
Population density of San Francisco compared to Siena
San Francisco: ca. 6.686 Einwohner/km²
Siena: ca. 447 Einwohner/km²
The population density of San Francisco is about15 times higher, than the one of Siena.
City comparison between San Francisco and other cities
more about San Francisco (California, USA)
more about Siena (Tuscany, Italy)