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The total population of Oman is 4,829,946 people. The people of Oman speak the language Modern Standard Arabic. Oman's linguistic diversity is diverse according to a fractionation scale, which for Oman is 0.3567. The average age is around 24.9 years. The life expectancy in Oman is 76. The female fertility rate in Oman is 2.9. Around 21% of Oman's population is obese. Ethnic diversity is diverse according to a fractionation scale, which for Oman is 0.4373. Details on the language, religion, age, gender distribution and advancement of the people of Oman can be found in the sections below, as well as the section on education in the country.

Population
In Oman, the population density is 13.5 people per square kilometer (35 per square mile). Based on these statistics, this country is considered sparsely populated. The total population of Oman is 4,829,946 people. Oman has approximately 1,844,978 foreign immigrants. Immigrants in Oman make up 0.5 percent of the total number of immigrants worldwide. Immigrants in Oman make up 30.6 percent of the total number of immigrants worldwide. The ethnic diversity of Oman is diverse according to an ethnicity-based fractionation scale. 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 Oman is 0.4373. This means that there is some diversity in Oman, although all people can still be divided into relatively few major ethnic groups. 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 Oman statistics on average age and gender distribution at different ages.

Old
The average age is around 24.9 years. The median age for males is 26.1 years, while the median age for females is 23.4 years.

Gender
The sex ratio, or number of males per female (estimated at birth), is 1.05. It can be further broken down into the following categories: sex ratio below 15 - 1.04; sex ratio from 15 to 64 - 1.38; sex ratio over 64 - 1.32; Overall sex ratio - 1.22. 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 of Oman is Islam, whose adherents make up 85.9% of all religious believers in the country. Islam (Arabic: الإسلام‎‎) is a monotheistic and Abrahamic religion articulated through the Qur'an, a religious text believed to be the literal word of God (Allāh) by its followers and by the teachings and norms for the vast majority of followers becomes an example (called Sunna, Arabic سنة, composed of reports, called Hadith, Arabic حديث) of Muhammad, who is considered by most of them to be the last prophet of God. A follower of Islam is called a Muslim. In addition to Islam, there are some followers of Christianity in Oman. Oman's religious diversity is diverse according to a fractionation scale based on the number of religions in Oman. The index of religious fractionalization in Oman is 0.4322. This score means that within the country there is one major religion and several other minor beliefs.