The population again received a large boost on August 1, 1929 through the incorporation of Ohligs, Wald, Höhscheid, and Gräfrath into the city limits.
Solingen is called the "City of Blades", since it has long been renowned for the manufacturing of fine swords, knives, scissors and razors made by famous firms such as Dreiturm, DOVO Solingen, Wüsthof, J. Henckels, Böker, Klauberg, Eickhorn-Solingen, and numerous other manufacturers.In Medieval times, the swordsmiths of Solingen coined the town's image, which is preserved to this date.The municipal councils are responsible for many of the boroughs' important administrative affairs.The five city boroughs: Höhscheid: Balkhausen, Bünkenberg, Dorperhof, Friedrichstal, Fürkelt, Glüder, Grünewald, Haasenmühle, Hästen, Katternberg, Kohlsberg, Meiswinkel, Nacken, Pfaffenberg, Pilghausen, Rölscheid, Rüden, Schaberg, Schlicken, Unnersberg, Weeg, Widdert, Wippe Mitte: Entenpfuhl, Eick, Grunenburg, Hasseldelle, Kannenhof, Kohlfurth, Krahenhöhe, Mangenberg, Meigen, Müngsten, Papiermühle, Scheidt, Schlagbaum, Schrodtberg, Stöcken, Stockdum, Theegarten, Vorspel, Windfeln Ohligs: Brabant, Broßhaus, Buschfeld, Caspersbroich, Deusberg, Engelsberger Hof, Hackhausen, Keusenhof, Mankhaus, Maubes, Monhofer Feld, Poschheide, Scharrenberg, Schnittert, Suppenheide, Unterland, Wilzhaus, Verlach Solingen was first mentioned in 1067 by a chronicler who called the area "Solonchon".of 161,366 is after Wuppertal the second largest city in the Bergisches Land.
It is a member of the regional authority of the Rhineland.
Other industries are brewing, dyeing, weaving and brick-making.
In World War II the Old Town was completely destroyed by an air raid of the British air force in 1944; 1,800 people died and over 1,500 people were badly injured.
The number of inhabitants peaked in 1971 with 177,899 residents, and the 2006 population figure was 163,263.
The following chart shows the population figures within Solingen's city limits at the respective points in time.
The city has an area of 89.45 square kilometres (34.54 sq mi), of which roughly 50% is used for agriculture, horticulture, or forestry.