Other localities include Sund, Torpa, Norra Vi, Asby, Rönnäs, Svinhult and Ydrefors.

This is a demographic table based on Ydre Municipality's electoral districts in the 2022 Swedish general election sourced from SVT's election platform, in turn taken from SCB official statistics.

[9] The rare and endangered flower Anthericum liliago can be found along the lake's rocky shores.

The plants are Vicia pisiformis and the orchids Ophrys myoides, Malaxis monophyllos, Herminium monorchis.

[13][E] As Nils Dacke's and his army advanced north through Ydre in 1542, local priests from Sund and Asby, and the populace in general, welcomed the rebellion as they were rejected church reforms imposed on them by Gustav Vasa.

[14] However local aristocrat Måns Johansson Natt och Dag who owned the manor of Ringshult[F] sided with the king despite having a troublesome relation to him.

[15] As Dacke's troops continued their advance north reaching as far as Mjölby the area around lake Sommen was spared from war.

[14] Unrest in Ydre continued well after the death of Dacke and ended only after Gustav Vasa sent a force of 400 men to pacify the hundred.

[14] Despite earlier defense of Catholicism at the Uppsala Synod in 1593 church representatives from Ydre voted to adopt the Lutheran creed.

Another tourist attraction is Naturum Sommen in Torpön Island, a visitor center and natural history museum.