Demographic features of Somalia's inhabitants include ethnicity, language, population density, education level, health, economic status, religious affiliations and other aspects of the population. Somalia is believed to be one of the most homogeneous countries in sub-Saharan Africa.
Child marriages, known to deprive women of opportunities to reach their full potential, have among women aged 20-24, 36 percent of total population.
The April 2020 SHDS report further unveils that fertility rates remain very high, the total fertility rate for Somalia is 6.9 children per woman, the highest in the world, which would impact planning for the next years. In addition, 99 percent of women have still been genitally circumcised.
According to The Economist, at independence Somalia was "arguably in ethnic terms the most homogeneous country in sub-Saharan Africa", ahead of Botswana, which is four-fifths Tswana. However, the publication also notes that "its ethnic homogeneity is misleading. Despite also sharing a single language and religion, it is divided into more than 500 clans and sub-clans".
Somalis constitute the largest ethnic group in Somalia, at approximately 98% of the nation's inhabitants. They are organized into clan groupings, which are important social units; clan membership plays a central part in Somali culture and politics. Clans are patrilineal and are typically divided into sub-clans, sometimes with many sub-divisions. Through the xeer system (customary law), the advanced clan structure has served governmental roles in many rural Somali communities.
Somali society is traditionally ethnically endogamous. So to extend ties of alliance, marriage is often to another ethnic Somali from a different clan. Thus, for example, a recent study observed that in 89 marriages contracted by men of the Dhulbahante clan, 55 (62%) were with women of Dhulbahante sub-clans other than those of their husbands; 30 (33.7%) were with women of surrounding clans of other clan families (Isaaq, 28; Gadabuursi, 3); and 3 (4.