Explore Eritrea - A Nation of 3620312 People. Eritrea (ER) is a diverse and thriving country spanning 117600 km² (45405 sq mi). With a population density of 31 people per km², it offers a unique blend of cultural heritage, economic opportunities, and breathtaking landscapes. Whether you're interested in tourism, business, or history, Eritrea stands out as a global destination. Stay informed about Eritrea’s geographic insights, demographic trends, and more. Discover why Eritrea is a key player on the world stage today!