Statistics Norway estimates Oslo's immigrant population in 2040 will be between 40% to 56%, most probably 47%.
Via the Local:
Immigrants are set to make up almost half of Oslo’s population by 2040, according to Statistics Norway, new figures show, prompting an immediate call for more restrictive immigration policies from Progress Party leader Siv Jensen.
In less than 30 years from now, 70 percent of the Norwegian capital’s first and second generation immigrants will have their roots in countries outside the 30-member European Economic Area, Statistics Norway said.
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According to Statistics Norway’s most likely scenario, Oslo’s immigrant population will rise from today’s 28 percent to 47 percent in 2040.
In the country as a whole, the immigrant population is expected to jump from 12 to 24 percent, or from 600,000 people today to 1.5 million in 2040.(source)