77 ] Moyamba District Moyamba 6,902 260,910 252,390 [ 77 ] Western Area Urban District Freetown 3,568 Western Area 1,272,873 1,473,873 Western Area Rural District Waterloo 4,175 174,249 205,400 [ edit ] Economy This section does not cite any references or sources . (November 2008) Diamond miners in Kono District .