Gummersbach developed rapidly from a small village to a large city during the early 19th century, due to the metal and textile industry. The right part of the arms thus show a spindle as a symbol for the textile industry. The left part shows the arms of the Counts of the Mark, as the area belonged to the Mark since 1287.
File:DEU Gummersbach COA.svg ist eine vektorisierte Version dieses Bildes. Diese sollte an Stelle des Rasterbildes verwendet werden, sofern sie nicht schlechter ist.