Population in Jena compared to Siena
Jena: 109.725 (2024)
Siena: 52.991 (2025)
In Jena there are about 2.1 time more people living, as in Siena.
Size of Jena compared to Siena
Jena: ca. 115 km²
Siena: ca. 119 km²
Jena has about the same land area as Siena.
Population density of Jena compared to Siena
Jena: ca. 956 Einwohner/km²
Siena: ca. 447 Einwohner/km²
The population density of Jena is about2.1 times higher, than the one of Siena.
City comparison between Jena and other cities
more about Jena
more about Siena