Skopje is an ethnically diverse city, and its urban sociology primarily depends on ethnic and religious belonging. Macedonians form 66% of the city population, while Albanians and Roma account respectively for 20% and 6%. Each ethnic group generally restrict itself to certain areas of the city. Macedonians live south of the Vardar, in areas massively rebuilt after 1963, and Muslims live on the northern side, in the oldest neighbourhoods of the city. These neighbourhoods are considered more traditional, whereas the south side evokes to Macedonians modernity and rupture from rural life.