The southern municipal limits, with the Kalteiche peak, part of the Rothaargebirge, form not only the community's highest point, at 579 m above sea level, but also the boundary between Hesse (Lahn-Dill-Kreis) and North Rhine-Westphalia.

In Napoleonic Times, Wilnsdorf, like the rest of the Siegerland, lay under the rule of the Grand Duchy of Berg.

On 1 January 1969, the formerly independent municipalities in the Amt were united to form the greater community of Wilnsdorf, the only exception being Eisern, which went to the town (now city) of Siegen.

The council's 36 seats are apportioned thus, in accordance with municipal elections held on 26 September 2004: Note: UWG is a citizens' coalition.

[2] Near the municipal hall is the forum kultur wilnsdorf – customarily written with lowercase initial letters – consisting of a folklore museum and a cultural history meeting place.

The folklore museum offers, on two floors, realistic looks into many fields of life and work in the southern Siegerland in the early 20th century.

Witness thereto is the Iron-Age blast furnace called Silberquelle ("Silver Source") on the Homberg in Wilnsdorf-Obersdorf.

This smithy from the mid 19th century is almost fully preserved thanks to the Wildener Heimatverein's efforts and can even be seen working on special occasions.

The smithy originally stood in the Köhlerweg ("Charcoal Maker Way"), but was moved to the middle of Wilden and reconstructed there in 1984.

To this pilgrimage place belong a chapel, a saint's cottage with a hermit's grave, a way of the Cross, a forest altar and a hermitage.

As making charcoal was so important to iron smelting and woods could therefore not be cleared, there was a dearth of hay meadows for growing livestock fodder.

Wilnsdorf lies on Federal Highway (Bundesstraße) B 54 and has at its disposal its own Autobahn interchange on the A45 right near which, in September 2005, a service centre – an Autohof, meaning one that does not have its own on- and off-ramps – with a filling station, a hotel and several restaurants opened.