Sommen is a locality in Tranås Municipality, in Jönköping County, Sweden. Sommen lies at 156 m above sea level. It has 740 inhabitants (2023). The nearest city is Motala, 45 km to the north. Among the landmarks around are Rök runestone (21 km), Vadstena Castle (35 km) and Vadstena Abbey (35 km).
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