Most heavily populated areas in Africa are in the drier regions, in the Sahara desert, in climates with regular rainfall, or far from the Mediterranean coast

The most heavily populated areas in Africa are generally found in climates with regular rainfall and closer to the Mediterranean coast. Some of these regions include:

1. Nile Valley: The Nile River, which runs through several countries including Egypt, Sudan, South Sudan, and Ethiopia, supports large populations due to its fertile soil and access to water. Cities like Cairo, Alexandria, and Khartoum are heavily populated.

2. Mediterranean Coast: Countries like Morocco, Algeria, Tunisia, and Libya have dense populations along their Mediterranean coastlines. The coastal areas have more moderate climates, making them suitable for agriculture and settlements. Cities such as Casablanca, Algiers, and Tripoli are major urban centers.

3. West Africa: Coastal countries in West Africa, like Nigeria, Ghana, Ivory Coast, and Senegal, have sizeable populations due to the availability of rainfall, rivers, and access to the Atlantic Ocean. Cities such as Lagos, Accra, Abidjan, and Dakar have high population densities.

4. East Africa: Countries like Kenya, Tanzania, Uganda, and Rwanda in East Africa have regions with high population densities. Areas near the Great Rift Valley, including cities like Nairobi, Dar es Salaam, and Kampala, benefit from the favorable climate and access to freshwater sources.

However, it is worth noting that certain drier regions like parts of the Sahel and the Sahara desert also have pockets of population, particularly in oasis towns and along trade routes. While these areas may not typically support large populations, they have historical significance and serve as transit points.