In 2018, Mohammed successfully edged out Oscar, Aksel, and Jacob to maintain its lead. This has put the Norwegian capital at odds with the rest of the country, where it didn't even make the top ten. By contrast, Lucas, Filip, and Oliver were the most popular boy's names nationwide.

"Oslo is something in itself. Here, different names are most popular than elsewhere in the country. This has always been the case", Statistics Norway Senior Adviser Jørgen Ouren told the local news outlet Vårt Oslo.

Mohammad has been the most popular name in the Norwegian capital since 2008, reflecting a substantial and constantly growing Muslim community living in the metropolitan area. In 2018, 8.7 percent of Oslo's population adhered to Islam, with Pakistanis, Somalis, Iraqis, and Moroccans forming the largest communities.

"Popular name choices in Oslo often differ greatly from the rest of the country. There are slightly different types of people living here than in the country. Often we see name become popular in Oslo and then spread out across the country", Ouren explained.