▁were ▁men ▁and ▁ 1 0 , 4 8 7 ▁were ▁women ; ▁ 3 , 2 6 4 ▁or ▁ 1 5 . 4 6 % ▁of ▁its ▁population ▁were ▁urban ▁dwell ers . ▁The ▁five ▁largest ▁eth nic ▁groups ▁reported ▁in ▁Bul en ▁were ▁the ▁Shin asha ▁( 4 8 % ), ▁the ▁G um uz ▁( 3 3 . 5 % ), ▁the ▁Am h ara ▁( 9 . 8 % ), ▁the ▁O rom o ▁( 8 % ), ▁and ▁the ▁A wi ▁( 0 . 5 %) ▁a ▁subgroup ▁of ▁the ▁Ag aw ; ▁all ▁other ▁eth nic ▁groups ▁made ▁up ▁ 0 . 2 % ▁of ▁the ▁population . ▁B oro ▁is ▁spoken ▁as ▁a ▁first ▁language ▁by ▁ 4 5 % ▁of ▁the ▁inhabitants , ▁ 3 3 . 4 % ▁speak ▁G um uz , ▁ 1 1 % ▁O rom iff a , ▁and ▁ 1 0 % ▁speak ▁Am har ic ; ▁the ▁remaining ▁ 0 . 6 % ▁spoke ▁all ▁other ▁primary ▁languages ▁reported . ▁The ▁majority ▁of ▁the ▁inhabitants ▁said ▁they ▁pract iced ▁Eth iop ian ▁Orth odox ▁Christian ity , ▁with ▁ 6 5 % ▁reporting ▁that ▁as ▁their ▁religion , ▁while , ▁ 2 1 . 5 % ▁observed ▁traditional ▁relig ions , ▁and ▁ 9 . 8 % ▁were ▁Muslim . ▁Conc ern ing ▁education , ▁ 1 5 . 1 % ▁of ▁the ▁population ▁were ▁considered ▁liter ate , ▁which ▁is ▁less ▁than ▁the ▁Zone ▁average ▁of