the Green League and the Swedish People's Party of Finland is also larger in Espoo than the average of Finland. The parties with the largest increase in support in the 2010s were the Green League and Movement Now. Demographics In 2020, Espoo had a population of 292,796 residents—an 18% increase over 2010. The city is the 7th-most densely populated in Finland. The population by citizenship in 2018 was 89.1% Finnish and 10.9% other nationalities. Religious affiliation was 53.6% Lutheran, 4.3% other, and 42.1% no religious affiliation. Espoo contains many high income suburbs, and six out of the ten highest average income postal code areas in Finland are in Espoo. In Espoo, the average income of foreign speaking men was €35,000 annually and for women €22,000 in 2018. In Helsinki the figure is €30,000 for men and €21,000 for women. In total the average income in Espoo (including foreign speakers) was over €42,000 in 2018. In 2021, there were 59,837 residents with a foreign background, 20% of the population. The largest groups are from Estonia, Russia and Iraq. Language The City of Espoo is officially bilingual. In 2021, the majority of the population, 73.2%, spoke Finnish as their first language, and 6.7% spoke Swedish. The number of people speaking Sámi, the third official language in Finland, was sixteen people. About 20% of Espoo's population has a first language other than Finnish or Swedish. The number of foreign language speakers in Espoo is smaller than in Vantaa, but larger than in Helsinki. According to an estimate, the number of foreign language speakers will rise to 30% of the city's population by 2030 and in 2027 almost a half (43.3%) of the people of 35 to 64 years in Espoo is estimated to be a foreign language speaker. The proportion of Swedish speakers decreased the most in the 1950s: in the 1950s, Swedish speakers amounted to 43.1% of the population (about 10,800 people), while in 1960 they amounted to 23.5% (about 13,300 people) This was caused by the rapid urbanization, which lead to a strong positive immigration of Finnish speakers from other parts of the country. The number of Swedish speakers slowly increased up to the 2010s, when they numbered about 20,300, while the proportion has decreased year by year. In 1996, the proportion fell below 10%. By the 2020s the proportion of Swedish speakers in Espoo was about 7% of the population.