Explore Sierra Leone - A Nation of 8420641 People. Sierra Leone (SL) is a diverse and thriving country spanning 72300 km² (27915 sq mi). With a population density of 116 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, Sierra Leone stands out as a global destination. Stay informed about Sierra Leone’s geographic insights, demographic trends, and more. Discover why Sierra Leone is a key player on the world stage today!