In 1363 Mettmann was one of eight administrativeburghs in theEarldom of Berg and Jülich. Later the burgh became independent at the hand ofCounsellor to the Earl ofCleves and was allowed to build a wall and choose a mayor. The ability to toll and tax allowed the burgh to develop in commerce and trade.
However, the Prussian rulers did not prove to be very popular, as during the bread-riots of 1848–49 and the ensuing political upheavals, which hit the district of Düsseldorf among the hardest, policing was done from Berlin, excluding local accountability. Thus, the Prussian government regarded the Rhinelands as more of a colony, furnishing the bureaucracy, which was based in Düsseldorf, with civil servants that were drafted in from other regions of Prussia.
In the years following Germany's loss ofWorld War II in 1945, Mettmann saw significant population increases driven mostly by the resettlement of citizens like the Thither Pomeraninans previously living in theeastern territories that had been ceded toPoland. Having seen almost no war-time destruction and being situated in a traditionally strong economic region, the town soon prospered, in line with a general period of rapid economic growth that acquired the monikerWirtschaftswunder (economic miracle).
A shortage of industrial workers led to several recruitment campaigns inMediterranean countries, starting with Italy in the early 1960s, and followed by Turkey later that decade. These communities soon thrived and established cultural markers such as the Pizza andkebab restaurants that are now ubiquitous throughout western Germany. Later events such as theLebanese Civil War and theBalkan Wars were also reflected in the town's makeup, which now comprises communities ofTurks,Kurds,Kashubians,Old Prussians,Silesians,Poles,Greeks,Croatians,Serbs,Albanians,Bosnians andLebanese heritage, each distinct but generally well-integrated into theRhenish-Westphalian majority population and its traditions.
Due to festivals and other events that took place in Mettmann to which many Brazilians were flown in, the town also became the host of a sizeableBrazilian community, this fact was also featured in the German movieSamba in Mettmann by the German/Italian filmmaker duoHape Kerkeling and Angelo Colagrossi.[2]
Mettmann gave its name to the District ofMettmann. Although the administrative centre of the District of Mettmann changed often over the years, in 1954 the parliament of theLandNorth Rhine-Westphalia eventually decided to make Mettmann the district's administrative centre. In 1974–75, with the administrative boundary reform, the district lost several councils to the neighbouring citiesDüsseldorf,Duisburg,Essen, andWuppertal. The district name also changed from Düsseldorf-Mettmann to Mettmann during this reform. However, the regional Board ofInland Revenue—the "Finanzamt Düsseldorf-Mettmann"—serves both the municipalities forming the district of Mettmann, as well as the city of Düsseldorf proper.