Horn of Africa can also mean the greater region containing the countries of Eritrea, Djibouti, Ethiopia and Somalia. The greater region covers about 2,000,000 km² (or 772,200 square miles) and is inhabited by about 94.2 million people (Ethiopia: 79 million, Somalia: 10 million, Eritrea: 4.5 million, and Djibouti: 0.7 million).