The total population of Finland is 5,542,517 people. The people of Finland speak the Swedish and Finnish languages. The linguistic diversity of Finland is vaguely diverse according to a fractionation scale, which is 0.1412 for Finland. The average age is around 43.2 years. Life expectancy in Finland is 81 years. The female fertility rate in Finland is 1.7. About 23% of the Finnish population is obese. Ethnic diversity is nearly uniform according to a fractionation scale, which for Finland is 0.1315. Details of the language, religion, age, gender distribution and advancement of the people of Finland can be found in the sections below, as well as the section on education in the country.

Population
In Finland, the population density is 16.2 people per square kilometer (42 per square mile). Based on these statistics, this country is considered sparsely populated. The total population of Finland is 5,542,517 people. Finland has approximately 315,881 foreign immigrants. Immigrants in Finland account for 0.2 percent of the total number of immigrants worldwide. Immigrants in Finland account for 5.4 percent of the total number of immigrants worldwide. The ethnic diversity of Finland is almost uniform according to a fractionation scale based on ethnicity. Ethnic Fractionation (EF) deals with the number, size, socioeconomic distribution, and geographic location of diverse cultural groups, usually within a state or some other demarcated area. Specific cultural characteristics can refer to language, skin color, religion, ethnicity, customs and traditions, history, or other distinctive criteria, alone or in combination. These characteristics are often used for social exclusion and power monopolization. Index of ethnic fractionation in Finland is 0.1315. This means that the people living in Finland come from a narrow group of ethnic groups that are all related to each other. EF is usually measured as 1 minus the Herfindahl concentration index of ethnolinguistic group proportions, which reflects the probability that two randomly drawn individuals from the population belong to different groups. The theoretical maximum of EF of 1 means that each person belongs to a different group. Read Finland's median age and gender distribution statistics at different ages below.

Age
The average age is around 43.2 years. The average age for men is 41.2 and the average age for women is 45.

gender
The sex ratio, or the number of males for each female (estimated at birth), is 1.04. It can be further broken down into the following categories: sex ratio below 15 - 1.04; sex ratio from 15 to 64 - 1.02; sex ratio over 64 - 0.69; Overall sex ratio - 0.96. The overall sex ratio differs from the sex ratio estimated at birth. This is because some newborns are included in the sex ratio estimated at birth, but die within the first few weeks of life and are not included in the overall sex ratio.

Religion
The majority religion in Finland is Christianity, whose adherents make up 81.6% of all religious believers in the country. Christianity is an Abrahamic monotheistic religion based on the life and teachings of Jesus Christ as presented in the New Testament. Christianity is the largest religion in the world with over 2.4 billion followers known as Christians. Christians believe that Jesus is the Son of God and the Savior of mankind, whose coming as Christ or Messiah was prophesied in the Old Testament. Besides Christianity, there are several other religions in the country. Other religions in Finland are Islam, Hinduism, folk religions. Finland's religious diversity is diverse according to a fractionation scale based on the number of religions in Finland. The index of religious fractionation in Finland is 0.2531. This score means that within the country there is one major religion and several other minor beliefs.