. 8 % ▁were ▁Irish , ▁and ▁ 8 . 7 % ▁were ▁Swedish . ▁ ▁Of ▁the ▁ 3 8 9   house holds , ▁ 1 8 . 3 % ▁had ▁children ▁under ▁the ▁age ▁of ▁ 1 8 ▁living ▁with ▁them , ▁ 4 3 . 4 % ▁were ▁married ▁cou ples ▁living ▁together , ▁ 5 . 9 % ▁had ▁a ▁female ▁house holder ▁with ▁no ▁husband ▁present , ▁ 4 5 . 2 % ▁were ▁non - famil ies , ▁and ▁ 4 0 . 6 % ▁of ▁households ▁were ▁made ▁up ▁of ▁individuals . ▁The ▁average ▁household ▁size ▁was ▁ 2 . 0 1 ▁and ▁the ▁average ▁family ▁size ▁was ▁ 2 . 6 7 . ▁The ▁median ▁age ▁was ▁ 5 2 . 9 ▁years . ▁ ▁The ▁median ▁house old ▁income ▁was ▁$ 3 9 , 7 1 2 ▁and ▁the ▁median ▁family ▁income ▁ ▁was ▁$ 5 7 , 2 9 2 . ▁M ales ▁had ▁a ▁median ▁income ▁of ▁$ 4 1 , 0 2 3 ▁versus ▁$ 2 7 , 0 1 9 ▁for ▁females . ▁The ▁per ▁cap ita ▁income ▁for ▁the ▁county ▁was ▁$ 3 4 , 5 7 1 . ▁About ▁ 6 . 7 % ▁of ▁families ▁and ▁ 1 1 . 2 % ▁of ▁the ▁population ▁were ▁below ▁the ▁pover ty ▁line , ▁including ▁ 9 . 8 % ▁of ▁those ▁under ▁age ▁ 1 8 ▁and ▁ 9 . 4 % ▁of ▁those ▁age ▁ 6