545,327 [ 72 ] Kono District Koidu Town 5,641 335,401 352,328 [ 73 ] Kailahun District Kailahun 3,859 358,190 409,520 [ 73 ] Bo District Bo 5,473.6 [ 74 ] Southern Province 463,668 561,524 [ 75 ] Bonthe District Mattru Jong 3,468 129,947 140,845 [ 76 ] Pujehun District Pujehun 4,105