▁was ▁ 6 5 ▁years ▁of ▁age ▁or ▁older . ▁The ▁average ▁household ▁size ▁was ▁ 2 . 3 1 ▁and ▁the ▁average ▁family ▁size ▁was ▁ 2 . 9 7 . ▁ ▁The ▁median ▁age ▁in ▁the ▁city ▁was ▁ 3 5 ▁years . ▁In ▁Sp ok ane , ▁ 2 2 . 4 % ▁of ▁residents ▁were ▁under ▁the ▁age ▁of ▁ 1 8 , ▁ 1 2 . 3 % ▁were ▁between ▁the ▁ages ▁of ▁ 1 8 ▁and ▁ 2 4 , ▁ 2 7 . 6 % ▁were ▁from ▁ 2 5 ▁to ▁ 4 4 , ▁ 2 5 . 1 % ▁were ▁from ▁ 4 5 ▁to ▁ 6 4 , ▁and ▁ 1 2 . 8 % ▁were ▁ 6 5 ▁years ▁of ▁age ▁or ▁older . ▁The ▁gender ▁make - up ▁of ▁the ▁city ▁was ▁ 4 8 . 8 % ▁male ▁and ▁ 5 1 . 2 % ▁female . ▁ ▁According ▁to ▁the ▁Association ▁of ▁Religion ▁Data ▁Archives ' ▁ 2 0 1 0 ▁Metro ▁Area ▁M emb ership ▁Report , ▁the ▁denomin ational ▁affili ations ▁of ▁the ▁Sp ok ane ▁M SA ▁are ▁ 6 4 , 2 7 7   E v angel ical ▁Protest ant , ▁ 6 8 2   Black ▁Protest ant , ▁ 2 4 , 8 2 6   Main line ▁Protest ant , ▁ 7 5 4   Or th odox , ▁ 6 6 , 2 0 2   C atholic , ▁