The total population of Slovenia is 2,081,260 people. The people of Slovenia speak the Slovene language. The linguistic diversity of Slovenia is vaguely diverse according to a fractionation scale, which is 0.2201 for Slovenia. The average age is around 43.5 years. Life expectancy in Slovenia is 80. Female fertility rate in Slovenia is 1.6. About 29% of the Slovenian population is obese. Ethnic diversity is nearly uniform according to a fractionation scale, which for Slovenia is 0.2216. Details of the language, religion, age, gender distribution and advancement of the people of Slovenia can be found in the sections below, as well as the section on education in the country.

Population
In Slovenia, the population density is 102 people per square kilometer (265 per square mile). Based on these statistics, this country is considered densely populated. The total population of Slovenia is 2,081,260 people. Slovenia has approximately 235,966 foreign immigrants. Immigrants in Slovenia make up 0.2 percent of the total number of immigrants worldwide. Immigrants in Slovenia make up 11.3 percent of the total number of immigrants worldwide. The ethnic diversity of Slovenia 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. The index of ethnic fractionation in Slovenia is 0.2216. This means that the people living in Slovenia come from a narrow group of ethnic groups, all of which are related to one another. 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 below Slovenia's statistics on the median age and gender distribution at different ages.

Age
The average age is around 43.5 years. The average age for men is 41.7 and the average age for women is 45.2.

Gender
The sex ratio, or number of males for every female (estimated at birth), is 1.07. It can be further broken down into the following categories: sex ratio below 15 - 1.06; sex ratio from 15 to 64 - 1.02; sex ratio over 64 - 0.64; Overall sex ratio - 0.95. 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 Slovenia is Christianity, whose adherents make up 78.4% 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. Slovenia's religious diversity is diverse according to a fractionation scale based on the number of religions in Slovenia. The index of religious fractionation in Slovenia is 0.2868. This score means that within the country there is one major religion and several other minor beliefs.