The projection for the population with a foreign mother tongue in Helsinki and the Helsinki Region was drawn up in the spring of 2019 in cooperation between the statistical and research authorities of the cities in the Helsinki Metropolitan Area. By 2035 the number of population with a foreign mother tongue in Helsinki is estimated to grow to 196,000 people, or about 26 per cent of the total population. In the Helsinki Region there would be 437,000 foreign-language speakers, making up about 25 per cent of the total population.

Men are expected to remain in a small majority in the population with a foreign mother tongue in Helsinki. In 2035 almost every third child aged 0–15 years and more than every fourth person of working age would have a foreign mother tongue. The number of foreign-language speakers aged 65 and over is estimated to grow fastest but they would still account for only 10 per cent of the whole population of that age in 2035. The biggest language group in Helsinki in 2035 is expected to be those who speak languages of North Africa or Asia as their mother tongue.