Population in San Diego compared to Siena
San Diego: 1.386.932 (2020)
Siena: 52.991 (2025)
In San Diego there are about 26.2 time more people living, as in Siena.
Size of San Diego compared to Siena
San Diego: ca. 964 km²
Siena: ca. 119 km²
San Diego Finland has a land area approximately. 8.1 times larger than that of Siena.
Population density of San Diego compared to Siena
San Diego: ca. 1.651 Einwohner/km²
Siena: ca. 447 Einwohner/km²
The population density of San Diego is about3.7 times higher, than the one of Siena.
City comparison between San Diego and other cities
more about San Diego (California, USA)
more about Siena (Tuscany, Italy)